Natural siphon autographic raingauge used at this weather station.

Llansadwrn (Anglesey) Weather
Daily Observations 2003

at 0900 GMT


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Logo: Llansadwrn Weather - Melin Llynnon, Ynys Môn



January 2003

 
                               CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR JANUARY 2003
---------------------------------------------------------------------------------------------------------------------------
  -09GMT-->       ---Air Temperature---       --Soil temp--  --Earth temp-- -State Grd.-     Weather         Rain  Fr. Pch
DD N dd ff  V ww Temp  Dpt  RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm 100cm E C GrSS   Rain SLHTGF   Press   hrs  hrs Evap
---------------------------------------------------------------------------------------------------------------------------
01 8 S   3  5 10 10.0  9.8  99 10.2  3.5  0.4  8.1  7.5  7.0  7.2  7.5  8.2  1 2 3  0    0.1 000000     990   0.0  0.0  0.0
02 7 NW  1  7 10  6.7  6.3  97  9.4  6.0  3.6  6.6  7.1  7.6  7.6  7.6  8.2  1 2 1  0   13.1 000000     983  14.5  0.0  0.2
03 8 NE  3  7 77  2.5  1.2  91  4.2  1.9  1.3  4.2  5.1  6.7  7.3  7.8  8.2  1 3 4  0    0.4 s02000     999   0.5  0.0  2.2
04 4 E   2  8 05  2.1 -0.4  84  4.5  1.8  0.5  2.2  3.3  5.2  6.1  7.2  8.1  1 0 0  0   tr/f 000000    1016   0.0  4.5  0.3
05 0 E   1  8 04 -1.4 -2.3  93  4.5 -2.2 -7.3  0.4  1.7  3.5  4.1  6.5  8.0  3 0 7  0    0.0 000000    1019   0.0  9.6  1.2
06 1 E   1  7 04 -0.2 -1.1  94  4.1 -1.5 -5.5  0.0  1.2  2.7  3.8  5.3  7.6  3 4 7  0    0.0 000000    1019   0.0 12.8  0.4
07 3 SE  3  7 04 -0.8 -5.0  73  1.7 -1.2 -5.0 -0.8  0.5  2.1  3.0  5.1  7.4  3 5 7  0    0.0 000000    1020   0.0 20.4  0.0
08 2 NE  1  7 04 -1.3 -2.8  89  3.9 -2.9 -6.7 -1.0  0.0  1.7  2.6  4.8  7.0  3 5 7  0    0.0 000000    1020   0.0 11.5  1.0
09 6 NE  3  7 03  3.3  0.1  79  5.0 -1.3 -3.1  0.0  0.5  1.6  2.8  4.5  6.6  3 0 4  0     tr 000000    1026   0.0  0.0  1.6
10 7 NE  3  7 02  4.2 -1.9  64  5.9  3.3  0.7  1.3  1.6  2.0  2.8  4.1  6.5  1 1 0  0    0.0 000000    1032   0.0  0.0  1.2
11 4 SE  1  8 04  0.0 -0.9  94  5.7 -1.8 -5.7  0.7  1.4  2.2  2.9  4.2  6.2  3 0 7  0    0.0 000000    1036   0.0  6.0  0.9
12 7 W   4  7 05  5.2  2.8  84  8.5  0.0 -3.2  2.0  2.0  2.3  2.8  4.2  6.2  1 1 4  0    0.7 000000    1033   2.2  0.0  0.5
13 8 SW  4  7 02  8.5  7.7  94  9.5  5.2  3.0  6.1  5.6  4.7  4.0  4.6  6.2  1 2 3  0     tr 000000    1029   0.0  0.0  0.6
14 8 SW  5  5 50  9.0  8.0  93  9.5  8.5  6.5  7.2  6.8  6.0  5.3  5.2  6.2  1 2 3  0    6.2 000000    1024   5.3  0.0  1.5
15 4 W   4  7 05  6.5  5.4  92  8.5  6.5  3.6  5.8  6.3  6.3  6.0  5.8  6.3  1 2 3  0    0.0 000000    1014   0.0  0.0  0.9
16 7 SW  4  7 05  7.0  5.7  91 10.0  4.9  0.8  4.3  4.5  5.1  5.5  6.0  6.5  1 1 0  0   12.2 0000G0    1023   4.0  0.0  2.1
17 8 W   3  4 63  5.9  5.7  98  7.6  5.9  5.1  6.5  6.7  6.5  6.0  6.0  6.8  2 3 3  0    1.8 0040G0    1004   0.9  0.0  0.7
18 6 S   4  7 05  7.0  4.7  85  9.0  4.6  0.7  4.6  5.0  5.2  5.8  6.2  6.9  1 2 1  0    2.7 000000    1008   4.1  0.0  1.2
19 7 W   1  5 10  6.3  6.0  98 10.1  6.3  4.0  6.0  6.2  6.2  6.2  6.3  6.9  1 2 3  0    2.9 000000     993   4.2  0.0  1.3
20 8 S   6  5 60  9.8  8.6  92  9.9  4.3  0.6  7.2  6.8  6.1  6.1  6.5  7.0  1 2 3  0    1.6 000000     975   2.1  0.0  1.6
21 7 S   1  6 02  6.8  5.0  88  7.1  6.1  3.8  5.7  5.8  6.0  6.2  6.5  7.0  1 2 3  0    6.9 000000     974   3.8  0.0  0.2
22 7 NW  3  7 10  5.9  5.0  94  6.5  4.8  1.1  5.5  5.8  6.0  6.2  6.5  7.1  1 2 3  0    0.6 004000     991   1.0  0.0  0.7
23 1 N   1  7 04  1.5  1.0  96  9.1  1.0 -3.3  1.5  3.0  5.0  5.8  6.5  7.1  1 1 5  0    0.8 000000    1025   2.2  0.0  1.8
24 8 S   5  7 10  9.1  8.5  96  9.6  1.5 -2.4  7.2  6.5  6.0  5.8  6.4  7.2  1 2 3  0   15.6 000000    1030   6.0  0.0  0.7
25 6 NW  4  6 10  7.7  7.1  96 10.0  7.2  3.9  6.8  7.1  7.1  6.6  6.7  7.2  1 2 3  0    2.5 000000    1026   3.5  0.0  0.5
26 8 SW  4  6 10 10.0  9.4  96 12.1  5.5  1.2  8.2  7.6  7.0  6.9  6.9  7.3  1 2 3  0     tr 000000    1029   0.0  0.0  0.3
27 8 SW  5  4 10  9.1  9.1 100 10.0  8.8  6.3  8.4  8.0  7.9  7.3  7.2  7.3  1 2 2  0    1.7 000000    1029   1.4  0.0  0.8
28 7 NW  6  7 80  5.8  2.9  82  6.5  4.5  0.7  5.0  5.5  6.5  7.2  7.5  7.5  1 1 3  0    2.4 004000    1018   2.4  0.0  1.5
29 2 N   6  7 05  4.7 -1.0  67  6.5  3.8  1.3  3.0  4.4  5.8  6.4  7.1  7.5  0 0 0  0    2.8 000000    1019   2.8  0.0  1.8
30 7 N   6  7 01  1.8 -2.6  73  1.8  0.4  0.0  2.4  3.9  5.2  5.9  6.7  7.5  1 2 9  0    0.0 s03000    1015   0.0  0.0  1.3
31 5 NE  2  8 04  0.9 -5.2  64  6.0  0.0 -3.1  0.7  1.8  3.4  4.7  6.2  7.5  0 0 0  0    7.2 000000    1025   4.5  0.0  0.6
---------------------------------------------------------------------------------------------------------------------------
Mean
   6              5.0  3.1  88  7.3  3.1  0.1  4.1  4.5  5.1  5.4  6.1  7.1                            1014
Total                                                                                   82.2                 65.4 64.8 29.6
---------------------------------------------------------------------------------------------------------------------------
(.) Differences from 1993-2002 average used by the Weather Observers Network & [.] from 1971-2000 average.

Air temperatures                         Weather (No. days occurrence)                       Rainfall was (82%) [84%] and
  Mean maximum      7.3    (-0.7) [-0.3]      Sleet/snow falling          2      ( 0.0)      79% of 1928-2002 average.
  Mean minimum      3.1    (+0.2) [+0.7]      Snow lying (at 09GMT)       0      (-0.4)      Most in a day:  15.6 mm on 24th
  Mean              5.2    (-0.3) [+0.2]      Hail  <5 mm                 5      {+1.6}      No. days:
  No. days <0.0C      6    (+1.0)             Hail >=5 mm                 0   {all types}      0.0 mm         8      (+ 0.9)
  Mean grass min    0.1    (-0.4)             Thunder heard               0      (-0.6)      >=0.2 mm        18      (- 1.2)
  Lowest grass min -7.3    (-0.7)             Gales                       2                  >=1.0 mm        14      (- 1.2)
  No. days <0.0C     10    (-3.7)             Fog (at 09GMT)              0                  >=5.0 mm         6      (- 0.4)
  Mean soil 30cm    5.4    (+0.4)
                                                                                             Lysimeter:
  Highest maximum 12.1C (+0.1) on 26th. Lowest minimum  -2.9 (-0.4) on 8th.                         PE      -1.4 mm
  Minimum relative humidity:  59% on 30th.    No. days at 30 cm >=5.6C 19; days <5.6C 12            PWB     83.6 mm
*                                                                                                   PWS     83.7 mm
* Rainfall 82.2 mm driest since 44.0 mm in 2001; ranked 27th driest since 1928.                     PWD     -0.1 mm
* Lowest mean of 0.3C on 7th lowest in January since -1.7C in 1997.
* No. days airfrost 6 (not unusual) almost equal to the whole of 2002 that had only 7.       Piche:         29.6 ml
---------------------------------------------------------------------------------------------------------------------------
Key: Observations at 09GMT...
  DD date; N cloud (oktas, 9=obscured); dd wind direction (8 sectors, 00=calm); ff wind speed (Beaufort scale);
  V visibility (0 dense fog, 1 thick fog, 2 fog, 3 moderate fog, 4 very poor, 5 poor, 6 moderate, 7 good, 8 very good);
  ww present weather SYNOP code (eg. 01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze)
  Temperatures (degC); Temp dry bulb temperature; Dpt dewpoint; RH relative humidity (%); soil temperatures are under bare
  soil and earth under grass; SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C,
  and grass Gr codes consult the page on 'Recording Atmospheric Depositions on Grass'.
24 hour observations...
  Max maximum temperature (degC) beginning 09GMT; Min minimum temperature ending 09GMT;
  Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap Piche evaporation (ml) beginning 09GMT;
  Rain rainfall beginning 09GMT (mm); Rain hrs hours of rainfall (>0.1mm/hr) 09-09GMT; Fr. hrs hours of frost (00-24GMT).
Monthly observations...
  PE Potential evapotranspiration, PWB Potential water balance, PWS Potential water surplus, PWD Potential water deficit.
Weather: days with...
  s slight or S heavy snow/sleet falling; L >=50% snow cover at 09GMT; H categories of hail: 1 ice crystals, 2 snow grains,
  3 snow pellets, 4 ice pellets, 5 hail 5-9 mm, 6 hail 10-19 mm; t slight or T heavy thunder heard; G gale; F fog code.
---------------------------------------------------------------------------------------------------------------------------

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February 2003

   
                               CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR FEBRUARY 2003
---------------------------------------------------------------------------------------------------------------------------
  -09GMT-->       ---Air Temperature---       --Soil temp--  --Earth temp-- -State Grd.-     Weather         Rain  Fr. Pch
DD N dd ff  V ww Temp  Dpt  RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm 100cm E C GrSS   Rain SLHTGF   Press   hrs  hrs Evap
---------------------------------------------------------------------------------------------------------------------------
01 5 W   1  5 10  3.9  3.7  98  7.7  0.9 -0.9  3.2  3.9  4.2  4.5  5.8  7.3  1 2 4  0    2.1 000000    1014   2.0  0.0  0.8
02 8 W   5  7 26  5.1  2.9  86  5.5  3.8 -0.2  4.2  4.6  5.2  5.2  6.0  7.1  1 3 4  0    2.3 s04000    1001   1.2  0.0  0.9
03 5 NW  3  7 87  2.4 -0.6  80  6.7  1.6 -1.7  1.5  2.5  4.0  4.9  5.8  6.9  1 1 6  0    0.3 003000     993   0.0  0.0  0.8
04 3 N   4  7 05  2.2 -1.5  77  5.4  0.8 -3.0  1.0  2.1  3.4  4.4  5.5  6.9  5 5 6  0    1.5 s03000    1001   0.6  0.0  0.6
05 5 NW  1  7 05  0.0 -1.2  92  5.5 -1.4 -5.2  0.8  1.7  3.0  4.1  5.2  6.8  5 5 9  0    0.4 004000    1013   0.2  7.2  1.0
06 8 S   1  7 50  5.5  3.1  84  8.6 -1.5 -5.3  3.3  3.2  3.3  4.0  5.1  6.5  1 2 3  0    1.3 000000    1013   0.7  0.0  0.5
07 7 SW  1  7 04  7.3  6.9  97  9.4  5.5  3.5  6.0  5.7  5.4  5.2  5.3  6.6  1 2 3  0    1.2 000000    1017   1.5  0.0  0.4
08 6 S   5  7 10  7.5  6.8  94  9.1  7.0  5.8  6.8  6.6  6.3  6.2  6.0  6.5  1 2 3  0   23.5 000001    1014  13.3  0.0  0.4
09 1 W   1  6 10  3.7  3.5  98 10.2  3.8 -0.4  5.5  6.4  6.8  6.5  6.6  6.8  1 2 5  0    0.0 000000    1013   0.0  0.0  1.1
10 7 S   4  8 02  5.8 -3.6  51  7.9  1.0 -3.8  3.2  3.8  5.2  5.7  6.5  6.8  1 0 0  0    2.7 000000    1016   5.2  0.0  1.4
11 1 SW  1  6 10  4.0  4.0 100  9.1  3.7 -0.3  3.8  4.5  4.5  5.8  6.2  7.0  1 2 2  0    0.1 000000    1023   0.0  0.0  0.3
12 9 NE  1  4 10  4.1  4.1 100  5.2  2.0 -2.7  4.0  4.3  5.2  5.3  6.1  7.0  1 2 2  0     tr 000002    1030   0.0  0.3  0.0
13 7 SE  1  3 10  0.0  0.0 100  7.4 -2.2 -5.6  1.5  2.5  4.0  5.0  6.0  7.0  3 0 8  0    0.0 000001    1028   0.0 10.0  0.9
14 0 E   1  5 04  0.5  1.2  88  4.6  0.0 -2.0  2.9  4.0  5.0  5.1  5.9  6.8  1 0 5  0    0.0 000000    1030   0.0  2.5  1.2
15 0 NE  1  7 04 -0.4 -6.5  63  8.4 -3.1 -9.0  0.5  1.7  3.5  4.4  5.5  6.8  3 0 7  0    0.0 000000    1036   0.0  9.6  1.7
16 1 00  0  7 04 -0.5 -1.4  94  6.0 -1.8 -6.8  0.4  1.5  3.0  3.9  5.2  6.8  3 0 7  0    0.0 000000    1035   0.0 10.7  0.9
17 0 NE  1  7 04 -0.9 -2.1  92  8.8 -2.5 -7.9  0.3  1.3  2.8  3.5  5.1  6.5  3 0 7  0    0.0 000000    1037   0.0 16.0  1.6
18 1 NW  1  7 04 -0.7 -5.3  71 10.0 -3.0 -9.0  0.1  1.2  2.5  3.3  5.0  6.5  2 0 5  0    0.0 000000    1025   0.0  9.6  3.5
19 6 SE  3  7 04  3.0 -8.0  44  8.9 -0.7 -5.2  0.0  1.0  2.3  3.0  4.5  6.2  3 0 0  0    0.0 000000    1012   0.0  5.3  1.9
20 7 NE  1  6 04  2.5 -1.1  77  8.5 -0.5 -4.2  0.1  1.5  2.4  3.0  4.2  6.0  3 0 0  0     tr 000000    1008   0.0  6.6  1.0
21 7 S   2  6 04  7.1  4.3  83 12.2  2.2 -1.2  3.0  3.0  3.5  3.6  4.5  5.8  1 1 3  0    0.0 000000    1017   0.0  0.0  1.6
22 0 SE  4  7 04  7.5  0.7  62 12.4  1.7 -2.5  2.0  2.7  3.8  4.2  4.8  5.6  1 0 5  0    1.0 000000    1019   1.8  0.0  2.9
23 6 S   5  6 80  8.8  7.3  90 10.3  5.8  1.3  6.4  5.8  5.2  5.0  5.2  5.9  1 3 3  0  tr/fr 000000    1015   0.0  0.0  0.8
24 4 SE  1  7 04  4.0  2.8  92 13.3  2.0 -2.4  2.6  3.5  5.0  5.2  5.5  6.0  1 1 4  0    0.0 000000    1021   0.0  0.0  2.2
25 7 SE  1  7 04  8.4  3.8  73 12.4  4.0  1.0  5.3  5.5  5.8  5.8  5.8  6.1  1 0 0  0    0.3 000000    1014   0.2  0.0  1.9
26 7 SE  2  6 04 10.2  4.1  66 14.9  7.7  4.5  6.5  6.5  6.5  6.3  6.1  6.5  1 2 3  0    1.6 000000    1006   1.6  0.0  1.5
27 8 SE  1  7 80  8.6  7.5  93 10.6  7.3  5.6  7.3  7.3  7.2  7.0  6.5  6.5  1 3 3  0    0.1 000000    1008   0.0  0.0  1.0
28 7 S   1  7 03 10.3  6.7  78 11.8  6.6  2.8  6.6  6.4  6.7  7.0  6.8  6.8  1 2 3  0    7.1 000000    1008   7.5  0.0  1.1
---------------------------------------------------------------------------------------------------------------------------
Mean
   5              4.3  1.5  83  9.0  1.8 -2.0  3.2  3.7  4.5  4.9  5.6  6.6                            1017
Total                                                                                   45.5                 35.8 77.8 33.9
---------------------------------------------------------------------------------------------------------------------------
(.) Differences from 1993-2002 average used by the Weather Observers Network & [.] from 1971-2000 average.

Air temperatures                         Weather (No. days occurrence)                       Rainfall was (43%) but [61%] an
  Mean maximum      9.0    (+0.5) [+0.5]      Sleet/snow falling          2      (-1.4)      60% of 1928-2002 average.
  Mean minimum      1.8    (-1.3) [-0.3]      Snow lying (at 09GMT)       0      (-0.8)      Most in a day:  23.5 mm on 8th.
  Mean              5.4    (-0.4) [+0.1]      Hail  <5 mm                 4      {-0.6}      No. days:
  No. days <0.0C      9    (+5.5)             Hail >=5 mm                 0   {all types}      0.0 mm        11      (+ 5.3)
  Mean grass min   -2.0    (-3.0)             Thunder heard               0      (-0.5)      >=0.2 mm        13      (- 6.3)
  Lowest grass min -9.0    (-4.2)             Gales                       0                  >=1.0 mm        10      (- 4.6)
  No. days <0.0C     21    (+9.2)             Fog (at 09GMT)              0                  >=5.0 mm         2      (- 5.3)
  Mean soil 30cm    4.9    (-0.8)
                                                                                             Lysimeter:
  Highest maximum 14.9C (+2.7) on 26th. Lowest minimum  -3.1 (-2.0) on 15th.                        PE      -0.8 mm
  Minimum relative humidity:  37% on 18,19th. No. days at 30 cm >=5.6C 8; days <5.6C 20             PWB     46.3 mm
* Most days AF 9 since 1996 that had 12. Most days GF since 22 in 1991.                             PWS     48.4mm
* Hi max of 14.9C on 26th ranks 3rd in Feb to 17.2C in 1985 and 15.0C in 1998.                      PWD     -2.1 mm
* Lo min of -3.1C coldest since -4.9C in 1997 but ranks 10th.
* Rainfall 45.5 mm driest in Feb since 30.8 mm in 1993; ranks 20th driest since 1928.        Piche:         33.9 ml
---------------------------------------------------------------------------------------------------------------------------
Key: Observations at 09GMT...
  DD date; N cloud (oktas, 9=obscured); dd wind direction (8 sectors, 00=calm); ff wind speed (Beaufort scale);
  V visibility (0 dense fog, 1 thick fog, 2 fog, 3 moderate fog, 4 very poor, 5 poor, 6 moderate, 7 good, 8 very good);
  ww present weather SYNOP code (eg. 01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze)
  Temperatures (degC); Temp dry bulb temperature; Dpt dewpoint; RH relative humidity (%); soil temperatures are under bare
  soil and earth under grass; SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C,
  and grass Gr codes consult the page on 'Recording Atmospheric Depositions on Grass'.
24 hour observations...
  Max maximum temperature (degC) beginning 09GMT; Min minimum temperature ending 09GMT;
  Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap Piche evaporation (ml) beginning 09GMT;
  Rain rainfall beginning 09GMT (mm); Rain hrs hours of rainfall (>0.1mm/hr) 09-09GMT; Fr. hrs hours of frost (00-24GMT).
Monthly observations...
  PE Potential evapotranspiration, PWB Potential water balance, PWS Potential water surplus, PWD Potential water deficit.
Weather: days with...
  s slight or S heavy snow/sleet falling; L >=50% snow cover at 09GMT; H categories of hail: 1 ice crystals, 2 snow grains,
  3 snow pellets, 4 ice pellets, 5 hail 5-9 mm, 6 hail 10-19 mm; t slight or T heavy thunder heard; G gale; F fog code.
---------------------------------------------------------------------------------------------------------------------------
 

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March 2003

                         
                                        CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR MARCH 2003
---------------------------------------------------------------------------------------------------------------------------
  -09GMT-->       ---Air Temperature---       --Soil temp--  --Earth temp-- -State Grd.-     Weather         Rain  Fr. Pch
DD N dd ff  V ww Temp  Dpt  RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm 100cm E C GrSS   Rain SLHTGF   Press   hrs  hrs Evap
---------------------------------------------------------------------------------------------------------------------------
01 8 S   5  7 03  8.8  5.5  80 10.9  5.3  2.5  6.2  6.0  6.4  6.8  6.9  7.0  1 2 3  0    3.3 000000    1006   2.1  0.0  0.8
02 1 SW  2  6 01  5.2  5.0  98 11.7  2.5 -1.6  4.0  4.8  6.1  6.7  7.0  7.1  1 2 4  0     tr 000000    1010   0.0  0.0  1.0
03 8 W   1  7 05  5.5  3.6  87 11.3  3.7 -0.7  4.7  5.1  6.0  6.7  7.0  7.1  1 1 1  0    3.2 000000    1013   3.2  0.0  1.1
04 8 SW  5  6 60 10.1  9.3  95 10.8  5.5  4.7  8.9  8.3  7.5  7.2  7.1  7.3  1 3 3  0    0.8 000000    1006   0.6  0.0  0.8
05 6 S   4  6 01  7.1  6.4  90  9.4  5.9  3.8  6.5  7.0  7.5  7.7  7.5  7.3  1 2 3  0    0.0 000000    1008   0.0  0.0  0.8
06 3 SW  1  7 10  5.4  4.5  94 11.1  3.2 -0.8  4.0  5.0  6.5  7.1  7.4  7.5  1 1 1  0     tr 000000    1014   0.0  0.0  2.3
07 7 S   5  6 80  8.5  3.7  72  8.6  5.2  3.5  6.5  6.5  7.0  7.2  7.3  7.5  1 1 3  0   13.8 004000    1004   9.5  0.0  1.3
08 8 SW  6  5 60  8.0  7.4  96  9.5  3.4  0.2  6.2  6.0  6.3  6.8  7.2  7.5  2 3 3  0   12.5 0000G0    1008   8.7  0.0  0.8
09 7 S   7  6 05  9.1  5.6  79  9.6  8.0  6.9  7.5  7.5  7.4  7.3  7.3  7.6  1 1 0  0    0.8 0000G0    1008   1.9  0.0  1.9
10 7 SW  6  7 04  9.2  5.5  77 10.7  8.0  6.4  7.5  7.5  7.3  7.5  7.5  7.7  1 1 0  0    0.4 000000    1010   0.3  0.0  1.7
11 5 SW  5  5 05  8.5  7.2  92 11.4  8.0  6.8  8.0  7.8  8.0  7.8  7.5  7.6  1 0 0  0    0.4 000000    1007   0.5  0.0  1.6
12 2 N   4  7 05  5.4  1.1  74  8.1  4.5  2.1  2.5  6.0  5.9  7.1  7.8  7.9  1 0 5  0    0.0 000000    1033   0.0  0.0  1.7
13 1 SE  1  7 04  3.7 -1.6  72 11.2  0.9 -4.7  2.5  3.8  5.9  7.1  7.8  7.9  1 0 5  0    0.0 000000    1039   0.0  1.8  1.3
14 0 NE  1  7 04  3.7 -0.9  72 15.3 -1.5 -7.0  1.7  3.5  5.5  6.7  7.4  7.8  2 0 5  0    0.0 000000    1035   0.0  8.8  2.5
15 4 NE  1  7 04  5.0  2.5  61 16.3  1.1 -5.0  2.7  3.7  5.7  6.7  7.3  7.8  1 0 5  0    0.0 000000    1036   0.0  0.0  2.5
16 3 E   1  7 04  6.0  0.0  66 12.9  1.0 -5.7  3.0  3.9  5.9  6.8  7.2  7.9  1 0 5  0    0.0 000000    1040   0.0  0.0  1.8
17 5 NE  1  7 04  7.3  1.1  65 15.4  2.5 -2.0  3.8  4.5  6.0  6.7  7.3  7.8  1 0 5  0    0.0 000000    1039   0.0  0.0  2.2
18 1 S   1  5 04  7.9  2.7  69 14.5  2.3 -1.7  4.5  5.1  6.5  7.0  7.5  7.8  1 0 4  0  tr/fg 000001    1035   0.0  0.0  1.1
19 7 NW  1  1 42  4.7  4.7 100 11.3  1.0 -1.4  6.5  6.3  7.0  7.2  7.8  7.9  1 2 2  0  tr/fg 000001    1033   0.0  0.0  1.0
20 7 SW  2  4 10  6.3  5.9  97  8.8  0.6 -2.2  7.0  7.0  7.5  7.8  7.8  7.9  0 0 4  0     tr 000000    1031   0.0  0.0  0.1
21 7 N   1  7 04  6.7  5.8  94 14.5  4.2  1.8  6.9  6.8  7.1  7.5  7.8  8.0  1 0 1  0    0.0 000000    1028   0.0  0.0  1.6
22 3 00  0  5 04  7.4  3.9  79 11.3  1.7 -2.0  5.5  5.7  7.0  7.6  8.0  8.0  1 0 4  0    0.0 000000    1024   0.0  0.0  1.8
23 0 NE  1  6 04 10.2  2.2  58 15.5  3.6 -1.9  5.5  5.6  7.0  7.6  8.0  8.2  0 0 4  0    0.3 000000    1023   0.3  0.0  2.7
24 7 S   1  6 04  9.3  7.0  85 12.5  7.5  2.8  8.0  7.8  8.3  8.5  8.3  8.2  1 2 3  0    0.0 000000    1020   0.0  0.0  1.3
25 7 SW  2  5 04  9.4  6.9  90 14.2  5.6  1.2  8.8  8.3  8.5  8.5  8.5  8.3  0 0 1  0    0.0 000000    1023   0.0  0.0  1.7
26 1 SE  1  5 05 10.4  6.6  77 15.8  4.9 -0.1  8.5  7.8  8.4  8.8  8.8  8.4  0 0 1  0    0.0 000000    1020   0.0  0.0  1.5
27 4 E   1  6 05 11.7  7.1  74 16.0  4.8  0.8  9.0  8.2  8.9  9.2  8.9  8.8  0 0 1  0    0.0 000000    1018   0.0  0.0  2.0
28 5 NE  1  5 05 12.0  7.0  72 17.4  5.9  0.3  8.1  7.9  9.0  9.4  9.4  8.8  0 0 1  0    0.0 000000    1013   0.0  0.0  2.0
29 7 N   2  5 05  8.4  6.5  88 11.0  5.9  2.5  9.3  9.2  9.6  9.8  9.5  8.9  0 0 1  0    0.0 000000    1015   0.0  0.0  1.2
30 6 N   1  5 05  9.3  6.5  83 11.8  2.5 -2.3  8.0  7.5  8.5  9.4  9.5  9.0  0 0 4  0    0.0 000000    1020   0.0  0.0  1.2
31 2 SW  1  7 05  7.2  3.4  77 13.5  2.2 -3.0  6.2  6.8  8.3  9.2  9.5  9.0  0 0 4  0   15.8 000000    1025   5.0  0.0  2.1
---------------------------------------------------------------------------------------------------------------------------
Mean
   5              7.7  4.6  81 12.3  3.9  0.1  6.1  6.4  7.2  7.7  7.9  7.9                            1021
Total                                                                                   51.3                 32.1 10.6 47.4
---------------------------------------------------------------------------------------------------------------------------
(.) Differences from 1993-2002 average used by the Weather Observers Network & [.] from 1971-2000 average.

Air temperatures                         Weather (No. days occurrence)                       Rainfall was (72%) [61%] and
  Mean maximum     12.3    (+2.2) [+2.1]      Sleet/snow falling          0      (-2.6)      70% of 1928-2002 average.
  Mean minimum      3.9    (-0.1) [+0.6]      Snow lying (at 09GMT)       0      (-0.4)      Most in a day:
  Mean              8.1    (+1.1) [+1.4]      Hail  <5 mm                 1      {-2.0}      No. days:
  No. days <0.0C      1    (-1.0)             Hail >=5 mm                 0   {all types}      0.0 mm        16      ( +6.4)
  Mean grass min    0.1    (-1.7)             Thunder heard               0      (-0.3)      >=0.2 mm        10      ( -6.5)
  Lowest grass min -7.0    (-1.9)             Gales                       2                  >=1.0 mm         5      ( -6.4)
  No. days <0.0C     16    (+5.5)             Fog (at 09GMT)              2                  >=5.0 mm         3      ( -1.7)
  Mean soil 30cm    7.7    (+0.7)
                                                                                             Lysimeter:
  Highest maximum 17.4C (+2.0) on 28th. Lowest minimum  -1.5 (-0.2) on 14th.                        PE      22.9 mm
  Minimum relative humidity:  47% on 14,28th. No. days at 30 cm >=5.6C 31; days <5.6C 0             PWB     28.4 mm
* Mean max of 12.3C was warmest in March on 25y record. The 17.4C on the 28th                       PWS     45.4 mm
* was ranked only 5th highest (20.5 in 1997). Mean min of 3.9C was close to average.                PWD    -17.0 mm
* With 51.3 mm rain it was the 29th driest March on record since 1928. Without the
* 15.8 mm on the 31st it would have been 12th! Both 2001 & 2002 were drier.                  Piche:         47.4 ml
---------------------------------------------------------------------------------------------------------------------------
Key: Observations at 09GMT...
  DD date; N cloud (oktas, 9=obscured); dd wind direction (8 sectors, 00=calm); ff wind speed (Beaufort scale);
  V visibility (0 dense fog, 1 thick fog, 2 fog, 3 moderate fog, 4 very poor, 5 poor, 6 moderate, 7 good, 8 very good);
  ww present weather SYNOP code (eg. 01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze)
  Temperatures (degC); Temp dry bulb temperature; Dpt dewpoint; RH relative humidity (%); soil temperatures are under bare
  soil and earth under grass; SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C,
  and grass Gr codes consult the page on 'Recording Atmospheric Depositions on Grass'.
24 hour observations...
  Max maximum temperature (degC) beginning 09GMT; Min minimum temperature ending 09GMT;
  Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap Piche evaporation (ml) beginning 09GMT;
  Rain rainfall beginning 09GMT (mm); Rain hrs hours of rainfall (>0.1mm/hr) 09-09GMT; Fr. hrs hours of frost (00-24GMT).
Monthly observations...
  PE Potential evapotranspiration, PWB Potential water balance, PWS Potential water surplus, PWD Potential water deficit.
Weather: days with...
  s slight or S heavy snow/sleet falling; L >=50% snow cover at 09GMT; H categories of hail: 1 ice crystals, 2 snow grains,
  3 snow pellets, 4 ice pellets, 5 hail 5-9 mm, 6 hail 10-19 mm; t slight or T heavy thunder heard; G gale; F fog code.
---------------------------------------------------------------------------------------------------------------------------
    

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April 2003

                               CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR APRIL 2003
---------------------------------------------------------------------------------------------------------------------------
  -09GMT-->       ---Air Temperature---       --Soil temp--  --Earth temp-- -State Grd.-     Weather         Rain  Fr. Pch
DD N dd ff  V ww Temp  Dpt  RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm 100cm E C GrSS   Rain SLHTGF   Press   hrs  hrs Evap
---------------------------------------------------------------------------------------------------------------------------
01 8 SW  4  6 21  8.1  7.7  97 11.7  6.9  6.0  8.8  9.0  9.3  9.6  9.5  9.2  2 2 3  0    1.9 004000    1006   1.1  0.0  0.7
02 5 N   3  7 05  8.2  4.3  77 12.1  3.5 -0.4  8.2  7.7  8.2  9.2  9.4  9.2  1 2 4  0    0.2 004000    1018   0.0  0.0  1.1
03 3 N   3  6 10  8.8  8.0  95 12.6  5.0  0.3  9.2  9.0  9.0  9.5  9.5  9.3  1 2 3  0  tr/fg 000000    1029   0.0  0.0  0.8
04 7 SW  1  3 42  8.5  8.3  99 15.8  6.3  1.9  9.8  9.5  9.8 10.1 10.0  9.3  1 0 2  0    0.0 000001    1034   0.0  0.0  1.0
05 1 SW  1  7 04  9.7  8.3  91 16.6  3.9 -0.7  9.0  8.5  9.8 10.3 10.1  9.5  1 0 1  0    0.0 000000    1035   0.0  0.0  1.1
06 2 NE  2  5 10  9.3  8.1  92 14.1  3.8 -1.0 11.0  9.5 10.0 10.8 10.5  9.8  0 0 2  0    0.0 000002    1032   0.0  0.0  0.9
07 8 N   2  4 05  7.5  6.0  90  8.7  5.9  2.8  9.8 10.1 10.5 10.9 10.7  9.8  0 0 1  0    0.0 000000    1027   0.0  0.0  0.9
08 0 SE  1  7 04  6.6  1.7  71 11.5  1.1 -2.7  6.9  6.5  8.2  9.8 10.2 10.0  0 0 4  0    0.0 000000    1026   0.0  0.0  1.9
09 7 E   2  7 05  7.5  1.3  65 11.2  1.0 -3.3  8.0  7.5  8.5  9.8 10.1 10.0  0 0 4  0    0.0 000000    1019   0.0  0.0  2.0
10 1 E   2  7 02  4.7 -3.0  57  8.4 -1.3 -6.0  6.0  5.8  8.0  9.5 10.0 10.0  0 0 4  0    0.0 000000    1014   0.0  6.5  1.3
11 7 SW  2  7 05  7.0  2.9  75 11.9  2.9 -0.7  8.6  8.4  9.0  9.8 10.0 10.0  0 0 4  0    0.0 000000    1009   0.0  0.0  1.6
12 6 NE  1  6 04  8.3  2.9  69 12.0  4.6  0.0  9.5  9.1  9.6 10.0 10.0 10.0  0 0 1  0    0.0 000000    1012   0.0  0.0  2.0
13 7 SE  3  7 04 11.7  5.5  66 15.7  4.3 -0.9  8.4  8.7  9.1 10.0 10.0 10.0  0 0 4  0    3.3 000000    1013   4.6  0.0  2.7
14 8 SE  2  7 03 14.1  7.9  66 23.0  9.6  8.5 12.0 11.0 10.7 10.4 10.4 10.0  1 1 3  0     tr 000000    1007   0.0  0.0  3.0
15 6 S   1  7 06 16.8  9.1  61 23.2 10.3  4.8 12.3 11.5 11.2 11.4 10.8 10.0  1 0 1  0    0.0 000000    1014   0.0  0.0  2.8
16 0 S   1  7 06 19.0  8.5  50 25.3 10.0  7.5 13.7 12.0 12.0 12.2 11.4 10.1  0 0 1  0    0.0 000000    1020   0.0  0.0  3.9
17 0 NE  3  5 04 14.3  8.4  67 23.7  9.9  5.5 12.3 11.7 12.5 12.8 12.0 10.4  0 0 1  0    0.0 000000    1026   0.0  0.0  3.7
18 0 NE  4  5 04 11.7  6.4  69 16.7  8.5  5.4 11.8 11.8 12.8 12.9 12.3 10.8  0 0 0  0    0.0 000000    1031   0.0  0.0  3.3
19 3 NE  5  7 05  8.8  3.7  71 12.7  6.5  4.0 11.0 10.8 12.0 12.8 12.4 11.0  0 0 0  0    0.0 000000    1025   0.0  0.0  2.4
20 7 E   4  6 05  8.0  4.4  78 12.3  6.7  5.8 11.3 11.1 11.8 12.2 12.3 11.3  0 0 0  0    6.8 000000    1014   2.5  0.0  1.4
21 8 NE  1  5 10  7.4  7.0  97 11.3  5.6  1.9  9.5  9.9 11.0 11.8 12.0 11.2  1 2 3  0    2.3 000000    1006   1.3  0.0  0.8
22 7 SW  4  7 05  9.7  6.5  80 13.2  6.4  4.4 11.7 10.5 10.8 11.5 11.8 11.3  1 0 3  0    0.0 000000    1012   0.0  0.0  1.6
23 0 NE  1  6 05 10.9  7.4  79 14.2  3.9  1.3  8.4  8.5 10.1 11.3 10.7 11.2  1 0 1  0    0.0 000000    1017   0.0  0.0  2.7
24 7 E   2  7 05 13.3  3.6  52 15.1  8.7  4.9 11.7 10.6 11.1 12.2 12.0 11.5  0 0 0  0    3.6 000000    1011   5.6  0.0  1.0
25 8 SE  1  6 60 10.8  9.2  90 14.7  6.9  3.8 10.7 10.6 11.0 11.5 11.7 11.2  1 3 3  0    0.6 000000    1006   3.3  0.0  1.8
26 6 S   1  7 01 11.0  6.6  74 13.0  8.2  6.5 10.0  9.5 10.2 11.3 11.7 11.2  1 0 3  0    6.2 000000     999   4.5  0.0  1.8
27 7 SW  5  6 10 10.3  9.7  96 14.2  6.3  4.9 10.8 10.2 10.7 11.3 11.5 11.1  1 2 3  0   17.4 000000     997   8.0  0.0  1.4
28 8 S   6  7 02 12.3  9.8  90 12.4  8.5  8.0 11.5 11.3 11.3 11.9 11.8 11.3  1 2 3  0    3.2 000000     983   4.0  0.0  0.4
29 7 SW  5  7 01 10.9  9.7  92 14.5  8.0  6.4 12.0 11.0 11.0 11.5 11.6 11.2  1 2 3  0   17.8 000000    1000   5.8  0.0  1.9
30 7 SW  3  6 80 10.0  7.9  87 14.2  7.8  6.2 10.7 10.5 11.0 11.8 11.7 11.2  1 3 3  0    3.3 004000    1001   2.1  0.0  1.1

------------------------------------------------------------------------------------------------------------------
Mean
   5             10.2  6.3  78 14.5  6.0  2.8 10.2  9.7 10.3 11.0 10.9 10.4                            1015
Total                                                                                   66.6                 42.8  6.5 53.0
---------------------------------------------------------------------------------------------------------------------------
(.) Differences from 1993-2002 average used by the Weather Observers Network & [.] from 1971-2000 average.

Air temperatures                         Weather (No. days occurrence)                       Rainfall was (89%) [115%] and
  Mean maximum     14.5    (+2.2) [+1.7]      Sleet/snow falling          0      (-2.1)      107% of 1928-2002 average.
  Mean minimum      6.0    (+0.9) [+1.6]      Snow lying (at 09GMT)       0      (-0.2)      Most in a day:  17.8 mm on 29th
  Mean             10.3    (+1.6) [+1.7]      Hail  <5 mm                 3      {-0.4}      No. days:
  No. days <0.0C      1    (+0.4)             Hail >=5 mm                 0   {all types}      0.0 mm        16      (+ 6.8)
  Mean grass min    2.8    (-0.2)             Thunder heard               0      (-0.2)      >=0.2 mm        12      (- 4.9)
  Lowest grass min -6.0    (-2.7)             Gales                       0                  >=1.0 mm        10      (- 3.8)
  No. days <0.0C      8    (+1.5)             Fog (at 09GMT)              0                  >=5.0 mm         4      (- 1.8)
  Mean soil 30cm    11.0   (+1.4)
                                                                                             Lysimeter:
  Highest maximum 25.3C (+7.9) on 16th. Lowest minimum  -1.3 (-1.0) on 10th.                        PE      50.1 mm
  Minimum relative humidity:  44% on 17th.    No. days at 30 cm >=5.6C 30; days <5.6C 0.            PWB     16.5 mm
* Max on 14-17th all >23C with the 25.3C on the 16th warmest in April on record.                    PWS     47.6 mm
* Mean max 14.5 ranked 4th, mean min 6.0 ranked joint 3rd. Mean 10.3C ranks 2nd                     PWD    -31.1 mm
* only to 1987 that had 10.6C. Daily mean 14-17th all warmest on April record, wi
* 17.6C on the 16th the highest. Mean soil at 30cm 11.0C warmest on record.                  Piche:         53.0 ml
---------------------------------------------------------------------------------------------------------------------------
Key: Observations at 09GMT...
  DD date; N cloud (oktas, 9=obscured); dd wind direction (8 sectors, 00=calm); ff wind speed (Beaufort scale);
  V visibility (0 dense fog, 1 thick fog, 2 fog, 3 moderate fog, 4 very poor, 5 poor, 6 moderate, 7 good, 8 very good);
  ww present weather SYNOP code (eg. 01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze)
  Temperatures (degC); Temp dry bulb temperature; Dpt dewpoint; RH relative humidity (%); soil temperatures are under bare
  soil and earth under grass; SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C,
  and grass Gr codes consult the page on 'Recording Atmospheric Depositions on Grass'.
24 hour observations...
  Max maximum temperature (degC) beginning 09GMT; Min minimum temperature ending 09GMT;
  Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap Piche evaporation (ml) beginning 09GMT;
  Rain rainfall beginning 09GMT (mm); Rain hrs hours of rainfall (>0.1mm/hr) 09-09GMT; Fr. hrs hours of frost (00-24GMT).
Monthly observations...
  PE Potential evapotranspiration, PWB Potential water balance, PWS Potential water surplus, PWD Potential water deficit.
Weather: days with...
  s slight or S heavy snow/sleet falling; L >=50% snow cover at 09GMT; H categories of hail: 1 ice crystals, 2 snow grains,
  3 snow pellets, 4 ice pellets, 5 hail 5-9 mm, 6 hail 10-19 mm; t slight or T heavy thunder heard; G gale; F fog code.
   

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May 2003

  
                               CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR MAY 2003
---------------------------------------------------------------------------------------------------------------------------
  -09GMT-->       ---Air Temperature---       --Soil temp--  --Earth temp-- -State Grd.-     Weather         Rain  Fr. Pch
DD N dd ff  V ww Temp  Dpt  RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm 100cm E C GrSS   Rain SLHTGF   Press   hrs  hrs Evap
---------------------------------------------------------------------------------------------------------------------------
01 7 SW  4  7 80 10.0  8.6  91 14.1  8.5  8.0 11.9 11.2 11.2 11.9 11.8 11.2  1 3 3  0    5.8 000000    1006   5.4  0.0  1.3
02 8 SE  4  5 61  8.2  8.0  99  9.5  7.1  3.7 10.0 10.3 11.1 11.9 12.0 11.2  1 3 3  0   17.2 000000     997   6.0  0.0  0.3
03 7 S   4  7 03  9.5  6.5  82 12.2  3.9 -0.4  8.7  8.4  9.6 11.0 11.6 11.5  1 1 4  0   26.5 000000    1012   9.6  0.0  1.3
04 8 S   6  7 02 12.2  7.3  72 15.2  9.5  8.7 12.0 11.2 10.9 11.2 11.4 11.3  2 0 0  0   11.4 000000    1003  10.0  0.0  1.8
05 8 NW  2  7 80  6.9  6.7  97 13.0  6.5  6.8 10.2 10.4 10.9 11.2 11.3 11.2  1 2 3  0    0.0 000000    1006   0.0  0.0  1.7
06 3 NW  3  7 03 11.2  6.8  74 14.0  5.0  0.7 11.1  9.6 10.5 11.8 11.8 11.2  1 0 1  0    1.7 000000    1021   1.7  0.0  1.9
07 7 S   2  7 03 11.7  9.3  85 13.5  7.3  3.9 12.5 11.4 11.7 12.2 12.0 11.3  1 1 3  0    0.3 000000    1024   0.3  0.0  1.1
08 2 W   4  7 05 11.5  6.0  69 15.7  7.5  4.1 12.3 10.7 11.2 12.1 12.0 11.4  1 0 3  0    0.0 000000    1019   0.0  0.0  2.2
09 6 W   5  8 03 11.1  6.2  72 13.8  5.5  2.8 12.2 11.0 12.0 12.4 12.3 11.5  0 0 1  0    0.5 000000    1016   0.9  0.0  1.8
10 2 SW  2  8 01 10.8  3.6  61 15.0  3.3  0.5 11.7 10.1 11.0 12.3 12.4 11.5  0 0 1  0    0.4 000000    1017   0.4  0.0  2.5
11 6 SW  4  8 80 11.1  6.4  73 13.8  8.3  6.8 13.9 12.3 12.2 12.8 12.5 11.8  0 1 3  0    4.3 004000    1014   1.6  0.0  1.8
12 5 W   3  7 02  8.7  4.7  77 13.7  5.7  3.4 10.7 10.5 11.5 12.6 12.6 11.8  1 0 4  0    0.5 004000    1011   0.2  0.0  2.0
13 7 NW  4  7 05 10.0  6.4  78 14.0  4.6  1.6 12.0 10.8 11.5 12.6 12.6 12.0  1 0 4  0    0.1 000000    1014   0.0  0.0  1.6
14 6 NW  3  7 03  9.5  5.3  75 14.3  5.1  1.9 12.4 11.2 11.8 12.9 12.8 12.0  0 0 1  0    0.0 000000    1023   0.0  0.0  1.6
15 5 SW  2  8 03 11.5  4.2  61 17.6  4.6  0.6 12.0 10.5 11.5 12.8 12.8 12.0  0 0 1  0   16.8 000000    1022  10.8  0.0  1.8
16 8 S   3  7 21 10.5  8.7  88 13.3  8.9  7.7 11.9 12.1 12.8 13.2 12.8 12.1  1 2 3  0    0.9 000000    1006   2.7  0.0  1.1
17 8 S   2  5 60 11.5 10.5  94 12.2 10.3  9.7 12.5 12.3 12.5 13.0 13.0 12.2  1 3 3  0    7.7 000000    1001   6.4  0.0  0.7
18 6 SW  6  6 01 12.2  9.5  83 14.5 10.1  9.5 13.4 12.2 12.2 12.8 12.8 12.2  1 2 3  0    1.1 000000    1001   0.6  0.0  2.4
19 5 S   5  7 05 11.5  7.4  76 13.6  9.0  7.6 13.0 11.8 12.0 13.0 12.8 12.0  1 0 3  0   11.2 000000    1002   9.8  0.0  1.1
20 8 W   5  7 02 10.6  8.6  87 12.5  7.5  6.8 11.5 11.2 11.7 12.7 12.8 12.2  1 2 3  0    3.3 000000    1010   2.0  0.0  0.5
21 8 SW  3  7 05 11.3  8.9  85 12.2  9.2  7.3 13.0 12.3 12.0 12.7 12.6 12.2  1 0 3  0   27.8 000000    1020  18.5  0.0  0.3
22 8 SW  2  4 65 11.7 11.5  99 12.5 11.2 10.8 12.4 12.4 12.4 12.8 12.6 12.2  2 3 3  0    6.3 000000    1017   5.3  0.0  0.7
23 6 SW  5  7 05 11.5  9.7  89 14.5  9.9  9.5 13.8 12.5 12.1 12.7 12.6 12.2  1 0 3  0    0.9 000000    1006   1.8  0.0  1.3
24 6 NW  2  7 02 11.5  9.5  88 15.6  9.2  7.3 14.2 13.2 13.0 13.3 12.8 12.1  1 1 3  0    1.2 000000    1005   1.2  0.0  1.0
25 8 NW  2  7 05 11.2  9.8  91 17.2  9.2  8.6 14.0 13.5 13.2 13.8 13.3 12.2  1 1 3  0    0.0 000000    1015   0.0  0.0  1.4
26 7 SW  3  8 01 12.2  7.7  74 15.6  7.6  5.0 14.0 13.3 13.5 14.1 13.6 12.5  0 0 1  0    2.1 000000    1020   4.9  0.0  1.7
27 8 SW  2  5 50 13.0 12.4  96 18.2 11.4 10.8 15.0 14.5 14.0 14.3 13.8 12.5  1 3 3  0    0.1 000000    1023   0.0  0.0  0.9
28 7 S   1  7 01 13.1 11.0  87 20.5 10.2  9.0 15.1 14.3 14.0 14.6 14.0 12.8  1 1 3  0    0.2 000000    1024   0.0  0.0  1.6
29 7 NE  2  7 01 15.8 13.7  87 21.2 11.8 10.2 19.0 16.3 15.3 15.3 14.4 13.1  0 0 3  0    0.0 000000    1020   0.0  0.0  2.3
30 0 E   1  5 04 21.2 16.6  75 24.8 14.0 11.5 20.2 17.2 16.3 16.3 15.0 13.2  1 1 1  0    0.0 000001    1016   0.0  0.0  1.8
31 8 SW  4  4 42 14.7 13.8  94 18.0 13.0 10.9 17.2 17.0 17.0 17.0 15.6 13.5  0 0 2  0     tr 000000    1013   0.0  0.0  1.6
------------------------------------------------------------------------------------------------------------------
Mean
   6             11.5  8.6  83 15.0  8.2  6.3 13.0 12.1 12.3 13.0 12.8 12.0                            1013
Total                                                                                  148.3                100.1  0.0 45.1
---------------------------------------------------------------------------------------------------------------------------
(.) Differences from 1993-2002 average used by the Weather Observers Network & [.] from 1971-2000 average.

Air temperatures                         Weather (No. days occurrence)                       Rainfall was (229%) [258%] and
  Mean maximum     15.0    (-0.5) [-1.0]      Sleet/snow falling          0      (-0.3)      232% of 1928-2002 average.
  Mean minimum      8.2    (+0.5) [+1.2]      Snow lying (at 09GMT)       0      (-0.1)      Most in a day:  27.8 mm on 21st
  Mean             11.6    ( 0.0) [+0.1]      Hail  <5 mm                 2      {+0.6}      No. days:
  No. days <0.0C      0    ( 0.0)             Hail >=5 mm                 0   {all types}      0.0 mm         6      (-7.3)
  Mean grass min    6.3    (+0.4)             Thunder heard               0      (-0.9)      >=0.2 mm        22      (+8.3)
  Lowest grass min -0.4    (-0.3)             Gales                       0                  >=1.0 mm        15      (+4.7)
  No. days <0.0C      1    (-0.2)             Fog (at 09GMT)              0                  >=5.0 mm         9      (+4.6)
  Mean soil 30cm   13.0    (-0.3)
                                                                                             Lysimeter:
  Highest maximum 24.8C (+1.6) on 30th. Lowest minimum   3.3 (+0.2) on 10th.                        PE      50.7 mm
  Minimum relative humidity:  46% on 15th.    No. days at 30 cm >=5.6C 31; days <5.6C 0.            PWB     97.4 mm
* Wettest May on record since 1928.                                                                 PWS    116.8 mm
* Maximum of 24.8C on 30th ranked 5th warmest in May on 25-y record.                                PWD    -19.4 mm
* Minimum of 14.0C on 30th ranked 3rd warmest in May on 25-y record.
*                                                                                            Piche:         45.1 ml
---------------------------------------------------------------------------------------------------------------------------
Key: Observations at 09GMT...
  DD date; N cloud (oktas, 9=obscured); dd wind direction (8 sectors, 00=calm); ff wind speed (Beaufort scale);
  V visibility (0 dense fog, 1 thick fog, 2 fog, 3 moderate fog, 4 very poor, 5 poor, 6 moderate, 7 good, 8 very good);
  ww present weather SYNOP code (eg. 01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze)
  Temperatures (degC); Temp dry bulb temperature; Dpt dewpoint; RH relative humidity (%); soil temperatures are under bare
  soil and earth under grass; SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C,
  and grass Gr codes consult the page on 'Recording Atmospheric Depositions on Grass'.
24 hour observations...
  Max maximum temperature (degC) beginning 09GMT; Min minimum temperature ending 09GMT;
  Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap Piche evaporation (ml) beginning 09GMT;
  Rain rainfall beginning 09GMT (mm); Rain hrs hours of rainfall (>0.1mm/hr) 09-09GMT; Fr. hrs hours of frost (00-24GMT).
Monthly observations...
  PE Potential evapotranspiration, PWB Potential water balance, PWS Potential water surplus, PWD Potential water deficit.
Weather: days with...
  s slight or S heavy snow/sleet falling; L >=50% snow cover at 09GMT; H categories of hail: 1 ice crystals, 2 snow grains,
  3 snow pellets, 4 ice pellets, 5 hail 5-9 mm, 6 hail 10-19 mm; t slight or T heavy thunder heard; G gale; F fog code.
---------------------------------------------------------------------------------------------------------------------------
        

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June 2003

                                         CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR JUNE 2003
---------------------------------------------------------------------------------------------------------------------------
  -09GMT-->       ---Air Temperature---       --Soil temp--  --Earth temp-- -State Grd.-     Weather         Rain  Fr. Pch
DD N dd ff  V ww Temp  Dpt  RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm 100cm E C GrSS   Rain SLHTGF   Press   hrs  hrs Evap
---------------------------------------------------------------------------------------------------------------------------
01 5 S   3  7 05 15.6 11.8  78 21.4  9.9  7.0 17.8 15.9 16.0 16.4 15.8 14.8  0 0 1  0    3.8 000000    1008   3.8  0.0  2.1
02 7 S   4  7 25 14.3 11.1  81 17.5 10.3  9.4 17.6 16.3 16.1 16.8 16.0 14.0  1 1 3  0     tr 000000    1006   0.0  0.0  1.9
03 7 SE  1  7 02 14.3 10.3  77 18.8 10.5  8.1 15.1 15.0 15.4 16.1 15.8 14.0  0 0 1  0    0.0 000000    1007   0.0  0.0  2.1
04 8 S   1  7 03 13.5  9.2  75 14.1  9.9  8.4 15.0 14.2 14.7 15.6 15.4 14.2  0 0 1  0    5.8 000000    1008   7.2  0.0  0.5
05 7 SW  3  7 01 12.5 10.6  88 15.7 10.4 10.0 13.8 13.8 14.5 15.2 15.1 14.1  1 0 3  0    1.6 000000    1015   2.8  0.0  2.6
06 8 S   5  6 10 13.6 13.2  98 16.8 12.2 11.2 14.3 14.3 14.6 15.1 15.0 14.2  1 2 3  0    0.0 000000    1012   0.0  0.0  1.5
07 3 S   5  7 05 14.9  9.7  71 18.6 10.5  8.2 15.2 13.5 14.0 15.1 15.0 14.1  1 0 1  0    4.9 000000    1013   6.1  0.0  2.3
08 8 SW  2  6 10 12.6 12.0  96 17.3 11.1  9.0 15.2 15.0 15.2 15.6 15.3 14.0  1 3 3  0    0.1 000000    1008   0.0  0.0  1.4
09 8 S   2  7 05 13.9  9.7  73 17.8 10.5  9.1 15.1 14.3 14.8 15.8 15.3 14.2  1 0 1  0    2.7 000000    1016   6.6  0.0  2.3
10 6 S   5  6 81 15.8 12.9  83 17.2 12.2 10.6 16.2 15.3 15.1 15.7 15.2 14.2  1 1 3  0    0.9 000000    1003   0.2  0.0  1.9
11 6 SW  3  7 05 14.6 10.6  77 18.0 11.0 10.0 17.2 15.0 15.1 16.0 15.5 14.2  1 0 1  0    0.1 000000    1015   0.0  0.0  2.0
12 5 SW  4  7 01 14.8 10.0  73 17.8 11.3  9.5 17.2 15.4 15.6 16.6 15.8 14.4  0 0 3  0    0.0 000000    1017   0.0  0.0  1.8
13 5 SW  2  7 05 15.3 10.0  71 19.2 10.1  7.3 17.8 15.7 16.0 16.7 16.1 14.7  0 0 1  0    0.0 000000    1024   0.0  0.0  2.2
14 2 NE  1  7 05 17.5 12.7  73 20.2 11.3  9.7 20.0 17.3 17.0 17.2 16.5 14.8  0 0 1  0    0.0 000000    1024   0.0  0.0  1.7
15 6 N   1  7 05 17.0 13.3  79 18.5 10.5  6.7 20.1 17.7 17.4 17.7 16.9 15.0  0 0 1  0    0.0 000000    1024   0.0  0.0  1.5
16 1 NE  1  7 04 17.4 12.4  72 23.9  9.7  5.8 19.8 16.5 16.5 17.3 16.8 15.0  0 0 1  0    0.0 000000    1017   0.0  0.0  2.1
17 6 NW  1  5 06 16.0 13.3  84 21.0 12.9 10.8 19.3 18.6 18.5 18.2 17.2 15.1  0 0 1  0    4.1 000000    1012   3.5  0.0  1.7
18 8 S   5  5 63 14.4 14.0  98 16.2 11.7  9.7 16.0 16.4 17.2 17.8 17.2 15.2  1 3 3  0    5.3 000000    1014   1.1  0.0  0.3
19 8 SW  3  4 10 14.5 14.0  97 19.0 13.0 12.3 16.6 16.6 16.4 17.0 16.8 15.2  1 0 2  0     tr 000001    1019   0.0  0.0  1.3
20 6 W   3  7 01 14.2  8.5  68 16.9  8.5  5.3 17.5 15.5 15.8 16.6 16.5 15.5  0 0 1  0     tr 000000    1023   0.0  0.0  1.7
21 8 00  0  7 05 15.3 12.4  70 20.6  9.5  6.0 17.4 15.7 15.8 16.6 16.5 15.3  0 0 1  0    0.7 000000    1021   3.0  0.0  1.3
22 5 S   3  6 01 20.4 14.6  70 21.0 12.7 10.4 19.5 17.0 16.5 16.9 16.5 15.3  0 0 3  0     tr 000000    1004   0.0  0.0  1.1
23 7 NW  2  7 01 15.3 11.8  80 18.8 12.3  9.8 18.8 17.3 16.9 17.1 16.5 15.2  0 0 0  0    0.0 000000    1008   0.0  0.0  1.7
24 7 NW  1  7 01 14.7 10.3  75 19.2 12.2 11.4 18.3 17.6 17.2 17.4 16.8 15.2  0 0 1  0    0.0 000000    1020   0.0  0.0  1.6
25 6 NE  1  7 04 18.0 13.6  76 23.2  9.3  7.0 19.2 16.4 16.4 17.2 17.0 15.4  0 0 1  0    0.5 000000    1020   0.4  0.0  1.8
26 7 S   1  6 04 19.5 15.3  77 22.4 13.8 11.6 20.5 18.8 18.2 18.2 17.2 15.5  0 1 3  0    8.1 000000    1017   6.2  0.0  1.1
27 8 S   2  5 63 15.0 14.5  97 17.5 14.4 13.5 17.5 17.7 18.2 18.2 17.4 15.6  1 3 3  0    1.1 000000    1015   2.3  0.0  0.6
28 8 W   1  7 02 14.0 11.0  82 17.6 10.4  6.4 16.6 16.0 16.5 17.4 17.2 16.0  1 0 3  0    0.0 000000    1016   0.0  0.0  1.7
29 5 E   2  7 05 17.6 11.8  69 20.2 11.9 10.7 19.4 16.9 16.6 17.5 17.2 15.8  1 0 1  0   20.5 000000    1010   7.5  0.0  3.3
30 8 NE  1  5 63 13.0 13.0 100 17.2 12.5 11.3 15.6 16.3 17.5 18.2 17.6 15.9  1 3 3  0    8.8 000002    1002   6.0  0.0  0.4

------------------------------------------------------------------------------------------------------------------
Mean
   6             15.3 11.9  80 18.8 11.2  9.2 17.3 16.1 16.2 16.8 16.3 14.9                            1014
Total                                                                                   69.0                 56.7  0.0 49.5
---------------------------------------------------------------------------------------------------------------------------
(.) Differences from 1993-2002 average used by the Weather Observers Network & [.] from 1971-2000 average.

Air temperatures                         Weather (No. days occurrence)                       Rainfall was (95%) [104%] and
  Mean maximum     18.8    (+1.7) [+1.1]      Sleet/snow falling          0      ( 0.0)      97% of 1928-2002 average.
  Mean minimum     11.2    (+1.3) [+1.7]      Snow lying (at 09GMT)       0      ( 0.0)      Most in a day:
  Mean             15.0    (+1.5) [+1.4]      Hail  <5 mm                 0      {-0.3}      No. days:
  No. days <0.0C      0    ( 0.0)             Hail >=5 mm                 0   {all types}      0.0 mm        10      (- 1.6)
  Mean grass min    9.2    (+0.8)             Thunder heard               0      (-0.8)      >=0.2 mm        14      (- 1.2)
  Lowest grass min  5.3    (+2.4)             Gales                       0                  >=1.0 mm        11      (+ 0.5)
  No. days <0.0C      0    ( 0.0)             Fog (at 09GMT)              0                  >=5.0 mm         5      (+ 0.4)
  Mean soil 30cm   16.8    (+1.3)
                                                                                             Lysimeter:
  Highest maximum 23.9C (-1.3) on 16th Lowest minimum   8.5 (+3.0) on 20th.                         PE      64.5 mm
  Minimum relative humidity:  54% on 16th.    No. days at 30 cm >=5.6C 30; days <5.6C 0             PWB      4.5 mm
* Mean max 18.8C ranked only 6th warmest on record since 1979, 1988 & 1992 had 20.0C.               PWS     37.2 mm
* But mean min 11.2C was warmest on record, previous highest was 10.8C in 1982.                     PWD    -32.7 mm
* The mean 15.0C ranks 3rd warmest against 15.2C in 1992 and tying with 1982.
* Was just 0.2 mm wetter than June 2002.                                                     Piche:         49.5 ml
---------------------------------------------------------------------------------------------------------------------------
Key: Observations at 09GMT...
  DD date; N cloud (oktas, 9=obscured); dd wind direction (8 sectors, 00=calm); ff wind speed (Beaufort scale);
  V visibility (0 dense fog, 1 thick fog, 2 fog, 3 moderate fog, 4 very poor, 5 poor, 6 moderate, 7 good, 8 very good);
  ww present weather SYNOP code (eg. 01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze)
  Temperatures (degC); Temp dry bulb temperature; Dpt dewpoint; RH relative humidity (%); soil temperatures are under bare
  soil and earth under grass; SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C,
  and grass Gr codes consult the page on 'Recording Atmospheric Depositions on Grass'.
24 hour observations...
  Max maximum temperature (degC) beginning 09GMT; Min minimum temperature ending 09GMT;
  Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap Piche evaporation (ml) beginning 09GMT;
  Rain rainfall beginning 09GMT (mm); Rain hrs hours of rainfall (>0.1mm/hr) 09-09GMT; Fr. hrs hours of frost (00-24GMT).
Monthly observations...
  PE Potential evapotranspiration, PWB Potential water balance, PWS Potential water surplus, PWD Potential water deficit.
Weather: days with...
  s slight or S heavy snow/sleet falling; L >=50% snow cover at 09GMT; H categories of hail: 1 ice crystals, 2 snow grains,
  3 snow pellets, 4 ice pellets, 5 hail 5-9 mm, 6 hail 10-19 mm; t slight or T heavy thunder heard; G gale; F fog code.
---------------------------------------------------------------------------------------------------------------------------
 

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July 2003

  
                               CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR JULY 2003
---------------------------------------------------------------------------------------------------------------------------
  -09GMT-->       ---Air Temperature---       --Soil temp--  --Earth temp-- -State Grd.-     Weather         Rain  Fr. Pch
DD N dd ff  V ww Temp  Dpt  RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm 100cm E C GrSS   Rain SLHTGF   Press   hrs  hrs Evap
---------------------------------------------------------------------------------------------------------------------------
01 8 N   1  4 61 13.0 13.0 100 16.5  9.2  7.3 15.5 15.6 16.5 17.3 17.2 16.0  1 3 3  0    1.7 000001    1000   2.7  0.0  0.4
02 7 N   1  7 05 14.0 12.7  92 20.0 12.0 10.2 16.0 15.8 16.1 17.2 17.0 16.0  1 1 3  0     tr 000000    1008   0.0  0.0  1.3
03 8 N   1  7 02 13.6 11.2  85 15.9 10.7  8.4 16.5 16.2 16.7 17.4 17.1 15.9  1 0 3  0    0.1 000000    1013   0.0  0.0  0.7
04 8 00  0  6 10 13.0 12.3  95 14.9 12.2 12.2 16.0 16.0 16.5 17.1 17.0 16.8  1 3 3  0     tr 000000    1018   0.0  0.0  0.6
05 8 NW  1  7 05 14.5 11.7  83 16.0 11.8 11.4 16.8 16.0 16.1 16.8 16.8 15.8  1 0 3  0    0.0 000000    1020   0.0  0.0  1.3
06 8 SW  2  7 05 14.9 10.8  76 19.2 12.0 11.4 16.3 16.0 16.1 16.8 16.8 15.8  0 0 0  0    0.0 000000    1021   0.0  0.0  2.2
07 7 S   4  7 01 15.7 12.8  83 19.8 13.5 12.5 16.9 16.7 16.7 17.1 16.8 16.8  0 0 0  0    0.3 000000    1020   0.4  0.0  2.0
08 8 S   1  5 10 16.7 15.9  95 20.7 14.2 14.2 18.7 17.8 17.8 17.7 17.2 15.9  0 0 2  0    0.0 000001    1020   0.0  0.0  1.6
09 3 S   4  7 05 18.9 16.2  85 21.7 14.8 12.2 20.0 17.9 18.0 18.0 17.3 16.0  0 0 1  0     tr 000000    1022   0.0  0.0  2.3
10 8 S   5  5 51 16.5 16.5 100 17.9 16.5 14.9 18.6 18.9 19.0 18.5 17.8 16.0  1 3 3  0    0.3 000000    1016   0.3  0.0  0.7
11 7 W   5  7 05 15.0 10.7  75 16.8 10.8  7.3 17.8 16.5 16.8 17.6 17.6 16.0  0 0 1  0    0.0 000000    1020   0.0  0.0  1.4
12 5 S   2  7 05 16.0  8.8  62 22.1 10.5  6.8 18.2 16.3 16.5 17.2 17.2 16.2  0 0 1  0    0.0 000000    1023   0.0  0.0  2.2
13 0 NE  1  7 04 18.5 14.7  79 23.3 11.0  7.8 19.9 17.3 17.5 17.8 17.8 16.1  0 0 1  0    0.0 000000    1020   0.0  0.0  2.4
14 0 NE  1  7 04 23.3 15.9  63 31.2 15.8 11.2 22.0 19.5 19.2 18.8 18.8 16.2  0 0 1  0     tr 000000    1014   0.0  0.0  4.0
15 6 E   1  7 04 22.8 18.0  75 27.7 18.5 15.0 23.8 21.7 20.8 20.0 18.5 16.4  0 0 0  0    0.0 000000    1010   0.0  0.0  3.5
16 6 NE  2  7 05 23.4 17.0  67 26.5 18.9 15.6 24.3 21.8 21.0 20.3 19.2 16.6  0 0 0  0    1.7 000T00    1006   0.5  0.0  2.2
17 8 S   1  4 10 17.7 17.2  97 17.7 15.5 14.5 20.5 20.5 21.0 20.4 19.3 16.8  1 1 3  0    6.2 000t00    1008   8.6  0.0  0.3
18 5 SW  5  8 01 16.3 11.1  71 22.4 12.4 10.8 18.7 17.3 18.0 19.1 18.9 17.1  1 0 3  0    0.0 000000    1015   0.0  0.0  3.3
19 8 S   5  7 05 18.8 14.7  77 21.8 16.3 15.6 19.0 18.7 19.0 19.5 18.8 17.0  0 0 0  0    5.9 000000    1012   3.5  0.0  2.5
20 7 S   4  7 25 16.5 14.6  89 18.9 13.6 12.2 18.6 17.6 18.0 19.0 18.8 17.2  1 2 3  0    5.1 000000    1009   2.2  0.0  1.1
21 6 SW  5  7 01 15.6 13.7  88 20.2 13.3 12.3 17.0 16.8 17.5 18.5 18.5 17.1  1 0 3  0    0.0 000000    1008   0.0  0.0  2.2
22 6 SW  2  6 05 16.5 13.5  82 20.6 14.2 13.2 16.9 17.0 17.9 18.7 18.2 17.0  1 0 1  0     tr 000000    1014   0.0  0.0  2.2
23 7 S   5  7 07 16.8 13.5  81 19.0 13.7 13.1 17.3 17.3 18.0 18.5 18.4 17.0  0 0 0  0    0.2 000000    1011   0.3  0.0  1.4
24 7 SW  4  7 05 15.7 11.5  76 20.1 12.7 11.7 18.0 17.2 17.5 18.3 18.2 17.0  0 0 3  0   12.7 000000    1001  14.0  0.0  1.3
25 8 SW  1  6 10 14.6 14.4  99 17.9 14.1 14.0 16.8 17.0 17.8 18.3 18.1 17.0  1 2 3  0    0.3 000000    1003   0.1  0.0  1.1
26 6 SW  2  6 02 15.6 14.2  90 18.6 13.0 11.3 17.6 16.8 17.0 18.0 17.9 17.0  1 2 3  0     tr 000000    1005   0.0  0.0  1.1
27 6 SW  2  7 01 15.3 11.8  80 19.8 11.0  7.5 17.0 16.4 17.0 17.8 17.8 17.0  1 0 1  0    0.0 000000    1010   0.0  0.0  2.4
28 6 S   5  7 05 16.7 12.4  76 18.2 12.8 10.9 17.0 16.3 17.0 18.0 18.0 17.0  0 0 0  0    1.8 000000    1014   3.5  0.0  1.2
29 8 S   5  7 02 15.6 12.7  83 17.5 14.5 14.0 17.0 16.8 17.1 17.8 17.7 16.8  1 0 3  0   10.4 000t03    1015  10.6  0.0  0.4
30 8 NE  2  5 10 14.5 14.3  99 18.7 13.8 13.5 16.8 16.5 17.8 17.5 17.5 16.8  1 2 3  0    3.1 000002    1015   4.2  0.0  0.8
31 8 S   4  7 10 14.1 13.2  94 16.5 12.8 10.1 15.8 16.0 16.8 17.4 17.5 16.6  1 3 3  0    0.3 000000    1014   0.4  0.0  1.0
------------------------------------------------------------------------------------------------------------------
Mean
   6             16.5 13.6  84 19.9 13.4 11.7 18.1 17.4 17.7 18.1 17.9 16.5                            1013
Total                                                                                   50.1                 51.3  0.0 51.1
---------------------------------------------------------------------------------------------------------------------------
(.) Differences from 1993-2002 average used by the Weather Observers Network & [.] from 1971-2000 average.

Air temperatures                         Weather (No. days occurrence)                       Rainfall was (89%) but [64%]
  Mean maximum     19.9    (+0.8) [+0.4]      Sleet/snow falling          0      ( 0.0)      and 67% of 1928-2002 average.
  Mean minimum     13.4    (+1.5) [+1.7]      Snow lying (at 09GMT)       0      ( 0.0)      Most in a day:  12.7 mm on 24th
  Mean             16.7    (+1.2) [+1.1]      Hail  <5 mm                 0      {-0.1}      No. days:
  No. days <0.0C      0    ( 0.0)             Hail >=5 mm                 0   {all types}      0.0 mm        10      (- 1.6)
  Mean grass min   11.7    (+1.4)             Thunder heard               3      (+2.4)      >=0.2 mm        14      (- 0.7)
  Lowest grass min  6.8    (+1.4)             Gales                       0                  >=1.0 mm         9      (- 2.5)
  No. days <0.0C      0    ( 0.0)             Fog (at 09GMT)              0                  >=5.0 mm         5      (- 0.5)
  Mean soil 30cm   18.1    (+0.8)
                                                                                             Lysimeter:
  Highest maximum 31.2C (+6.4) on 14th. Lowest minimum   9.2 (+1.3) on 1st.                         PE      50.8 mm
  Minimum relative humidity:  41% on 14th.    No. days at 30 cm >=5.6C 31; days <5.6C nil.          PWB     -0.7 mm
* Abs maximum on 14th of 31.2C was highest in July on record (1979). It was also                    PWS     33.8 mm
* the 2nd highest of any month (33.0C on 2 August 1990).                                            PWD    -34.5 mm
* Rainfall was below average, particularly on the longer-term, and was ranked 25th driest since 1928.
*                                                                                            Piche:         51.1 ml
---------------------------------------------------------------------------------------------------------------------------
Key: Observations at 09GMT...
  DD date; N cloud (oktas, 9=obscured); dd wind direction (8 sectors, 00=calm); ff wind speed (Beaufort scale);
  V visibility (0 dense fog, 1 thick fog, 2 fog, 3 moderate fog, 4 very poor, 5 poor, 6 moderate, 7 good, 8 very good);
  ww present weather SYNOP code (eg. 01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze)
  Temperatures (degC); Temp dry bulb temperature; Dpt dewpoint; RH relative humidity (%); soil temperatures are under bare
  soil and earth under grass; SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C,
  and grass Gr codes consult the page on 'Recording Atmospheric Depositions on Grass'.
24 hour observations...
  Max maximum temperature (degC) beginning 09GMT; Min minimum temperature ending 09GMT;
  Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap Piche evaporation (ml) beginning 09GMT;
  Rain rainfall beginning 09GMT (mm); Rain hrs hours of rainfall (>0.1mm/hr) 09-09GMT; Fr. hrs hours of frost (00-24GMT).
Monthly observations...
  PE Potential evapotranspiration, PWB Potential water balance, PWS Potential water surplus, PWD Potential water deficit.
Weather: days with...
  s slight or S heavy snow/sleet falling; L >=50% snow cover at 09GMT; H categories of hail: 1 ice crystals, 2 snow grains,
  3 snow pellets, 4 ice pellets, 5 hail 5-9 mm, 6 hail 10-19 mm; t slight or T heavy thunder heard; G gale; F fog code.
---------------------------------------------------------------------------------------------------------------------------
            

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August 2003

     
                               CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR AUGUST 2003
---------------------------------------------------------------------------------------------------------------------------
  -09GMT-->       ---Air Temperature---       --Soil temp--  --Earth temp-- -State Grd.-     Weather         Rain  Fr. Pch
DD N dd ff  V ww Temp  Dpt  RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm 100cm E C GrSS   Rain SLHTGF   Press   hrs  hrs Evap
---------------------------------------------------------------------------------------------------------------------------
01 7 SW  1  6 10 15.6 14.6  94 21.0 14.0 13.3 16.7 16.5 16.9 17.3 17.3 16.6  1 0 3  0    0.0 000000    1014   0.0  0.0  1.8
02 6 SW  2  7 05 16.3 13.3  82 20.1 11.9  8.9 17.5 16.8 17.0 17.8 17.6 16.5  1 0 1  0    0.0 000000    1021   0.0  0.0  2.3
03 3 S   2  7 05 17.3 12.5  73 22.2 11.8  8.8 18.0 16.2 16.9 17.9 17.7 16.6  0 0 1  0    0.0 000000    1023   0.0  0.0  2.3
04 1 NE  1  7 04 19.8 15.1  74 28.3 11.8  9.2 19.8 17.3 17.8 18.4 18.0 16.8  0 0 1  0     tr 000000    1024   0.0  0.0  2.7
05 4 SE  1  7 04 28.3 19.8  60 31.7 17.5 16.1 23.2 20.7 20.0 19.5 18.5 16.9  0 1 3  0     tr 000t00    1020   0.0  0.0  2.8
06 9 SW  2  5 10 19.2 17.2  88 21.6 15.7 13.9 21.0 20.2 20.0 20.0 18.9 17.0  0 0 2  0    0.0 000002    1020   0.0  0.0  0.8
07 9 S   1  4 04 19.5 17.9  90 20.9 15.0 12.1 20.2 19.2 19.2 19.4 18.8 17.2  0 0 2  0  tr/fg 000002    1024   0.0  0.0  0.6
08 4 NE  1  4 10 19.3 18.8  97 25.1 15.7 14.2 21.8 19.8 19.3 19.5 18.8 17.2  0 0 2  0    0.0 000001    1021   0.0  0.0  1.9
09 2 SE  2  5 04 26.0 19.4  67 29.8 17.7 14.0 21.2 20.3 20.3 20.2 19.5 17.4  0 0 1  0    1.0 000000    1019   0.6  0.0  2.1
10 8 NE  2  2 42 16.6 16.6 100 17.7 15.9 13.8 20.0 20.5 21.0 20.3 19.5 17.6  1 2 3  0     tr 000002    1019   0.0  0.0  1.0
11 7 N   1  7 05 16.2 13.7  85 19.3 13.6 10.8 18.2 18.0 18.8 19.5 19.2 17.7  0 0 1  0    0.0 000t00    1021   0.0  0.0  1.4
12 7 N   1  5 05 17.5 16.0  91 20.6 11.9  8.8 19.0 18.2 18.5 19.3 19.0 17.8  0 0 1  0    0.4 000000    1022   0.5  0.0  1.2
13 7 W   2  7 05 17.0 14.6  86 22.4 13.5  9.9 18.5 18.0 18.5 19.0 19.0 18.8  0 1 3  0    0.7 000000    1022   0.5  0.0  1.4
14 5 N   2  7 05 14.7 12.1  85 17.8  9.4  5.4 15.8 15.8 17.5 18.6 18.8 17.8  0 0 1  0  tr/fg 000000    1022   0.0  0.0  1.4
15 5 N   1  7 05 15.6 13.3  86 18.0 10.1  8.0 17.5 16.5 17.8 18.5 18.6 17.6  0 0 2  0    0.0 000002    1020   0.0  0.0  1.4
16 2 NE  1  7 04 16.7 12.8  78 21.7 10.6  8.5 17.5 16.7 17.8 18.3 18.5 17.6  0 0 1  0    0.0 000000    1020   0.0  0.0  1.8
17 7 SE  2  7 05 19.5 11.6  60 22.5 13.4 10.5 19.7 18.7 18.8 18.8 18.5 17.5  0 0 0  0    0.8 000000    1015   2.0  0.0  2.3
18 7 W   1  7 10 14.5 13.8  96 20.6 12.8 12.5 17.8 18.0 18.6 18.6 18.5 17.5  1 2 3  0    0.0 000000    1012   0.0  0.0  1.9
19 7 W   2  7 01 14.7 11.4  78 20.1 12.3  9.4 17.4 17.5 18.3 18.5 18.4 17.5  0 0 0  0    0.0 000000    1020   0.0  0.0  2.0
20 4 SW  2  8 01 14.0 11.0  82 18.5 12.0  9.6 15.8 16.8 18.2 18.3 18.4 17.5  0 0 1  0     tr 000000    1021   0.0  0.0  2.0
21 6 S   6  7 02 16.2 13.2  82 18.5 13.9 12.6 17.0 17.0 17.8 18.0 18.2 17.3  0 0 0  0    1.0 000000    1013   2.5  0.0  1.4
22 8 S   1  5 10 15.5 14.6  95 19.0 15.2 14.8 17.7 17.5 18.0 17.9 18.0 17.2  1 2 3  0    2.2 000000    1014   5.2  0.0  0.2
23 8 00  0  6 10 19.0 18.0  94 21.3 15.4 15.1 19.3 18.2 17.8 18.0 18.0 17.2  1 2 3  0    1.4 000000    1019   2.0  0.0  0.6
24 2 NE  2  8 02 20.0 16.7  81 22.7 16.7 13.9 18.5 17.8 18.1 18.3 18.0 17.0  1 0 1  0    0.0 000000    1021   0.0  0.0  1.7
25 2 E   3  7 05 17.5 11.9  70 19.4 12.8  9.9 17.1 16.3 17.7 18.5 18.2 17.1  0 0 1  0    0.0 000000    1021   0.0  0.0  2.0
26 8 E   2  7 05 14.7 11.9  88 17.5 13.8 12.5 17.0 17.0 17.8 18.2 18.1 17.0  0 0 0  0    0.0 000000    1019   0.0  0.0  1.4
27 2 NE  4  5 05 14.9 12.7  87 19.4 11.9  9.3 14.5 15.3 16.9 17.6 17.9 17.2  0 0 1  0    0.0 000000    1015   0.0  0.0  2.2
28 6 N   1  6 05 15.6 12.7  83 19.6 12.7 10.3 17.8 17.3 17.8 17.9 17.9 17.0  0 0 0  0    0.1 000000    1010   0.2  0.0  1.6
29 7 NE  4  7 03 13.7  9.4  75 16.8 11.0 10.0 15.0 15.6 16.8 17.3 17.8 17.0  0 0 0  0    9.2 004T00    1011   0.7  0.0  2.4
30 6 N   2  8 03 13.2  8.9  75 16.1  7.8  5.8 14.0 13.8 15.7 16.6 17.2 17.0  1 1 3  0     tr 000000    1020   0.0  0.0  1.6
31 7 N   1  7 03 12.6  8.8  78 15.0  7.5  5.0 13.2 13.5 15.0 16.4 17.1 16.8  0 0 1  0     tr 000000    1022   0.0  0.0  1.1
------------------------------------------------------------------------------------------------------------------
Mean
   6             17.1 14.0  83 20.8 13.1 10.9 18.0 17.5 18.1 18.5 18.3 17.3                            1019
Total                                                                                   16.8                 14.2  0.0 51.3
---------------------------------------------------------------------------------------------------------------------------
(.) Differences from 1993-2002 average used by the Weather Observers Network & [.] from 1971-2000 average.

Air temperatures                         Weather (No. days occurrence)                       Rainfall was (23%) [21%] and
  Mean maximum     20.8    (+1.3) [+1.5]      Sleet/snow falling          0      ( 0.0)      19% of 1928-2002 average.
  Mean minimum     13.1    (+0.9) [+1.7]      Snow lying (at 09GMT)       0      ( 0.0)      Most in a day:  9.2 mm on 29th.
  Mean             17.0    (+1.1) [+1.6]      Hail  <5 mm                 1      {-0.2}      No. days:
  No. days <0.0C      0    ( 0.0)             Hail >=5 mm                 0   {all types}      0.0 mm        14      (+ 3.3)
  Mean grass min   10.9    (+0.6)             Thunder heard               3                  >=0.2 mm         8      (- 6.7)
  Lowest grass min  0.0    ( 0.0)             Gales                       0                  >=1.0 mm         5      (- 6.5)
  No. days <0.0C      0    ( 0.0)             Fog (at 09GMT)              1                  >=5.0 mm         1      (- 4.5)
  Mean soil 30cm   18.5    (+1.0)
                                                                                             Lysimeter:
  Highest maximum 31.7C (=6.1) on 5th. Lowest minimum   7.5 (+1.2) on 31st.                         PE      51.4 mm
  Minimum relative humidity: 53% on 5 & 17th. No. days at 30 cm >=5.6C 31; days <5.6C nil.          PWB    -34.6 mm
* Highest max of 31.7C was 2nd highest in August and any month on record since 1979.                PWS      9.0 mm
* Highest was 33.0C in 1990. With only 16.8 mm rain it ranks 4th driest August on 76-y record.      PWD   -43.50 mm
* Mean max 20.8C (ranking 6th) and mean min 13.1C (ranking 3rd) warmest since 1997.
* Hi min 17.7C on 9th (rank 3rd) and mean soil at 30 cm 18.5C (rank 3) warmest since 1997.   Piche:         51.3 ml
---------------------------------------------------------------------------------------------------------------------------
Key: Observations at 09GMT...
  DD date; N cloud (oktas, 9=obscured); dd wind direction (8 sectors, 00=calm); ff wind speed (Beaufort scale);
  V visibility (0 dense fog, 1 thick fog, 2 fog, 3 moderate fog, 4 very poor, 5 poor, 6 moderate, 7 good, 8 very good);
  ww present weather SYNOP code (eg. 01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze)
  Temperatures (degC); Temp dry bulb temperature; Dpt dewpoint; RH relative humidity (%); soil temperatures are under bare
  soil and earth under grass; SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C,
  and grass Gr codes consult the page on 'Recording Atmospheric Depositions on Grass'.
24 hour observations...
  Max maximum temperature (degC) beginning 09GMT; Min minimum temperature ending 09GMT;
  Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap Piche evaporation (ml) beginning 09GMT;
  Rain rainfall beginning 09GMT (mm); Rain hrs hours of rainfall (>0.1mm/hr) 09-09GMT; Fr. hrs hours of frost (00-24GMT).
Monthly observations...
  PE Potential evapotranspiration, PWB Potential water balance, PWS Potential water surplus, PWD Potential water deficit.
Weather: days with...
  s slight or S heavy snow/sleet falling; L >=50% snow cover at 09GMT; H categories of hail: 1 ice crystals, 2 snow grains,
  3 snow pellets, 4 ice pellets, 5 hail 5-9 mm, 6 hail 10-19 mm; t slight or T heavy thunder heard; G gale; F fog code.
---------------------------------------------------------------------------------------------------------------------------

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September 2003

                               CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR SEPTEMBER 2003
---------------------------------------------------------------------------------------------------------------------------
  -09GMT-->       ---Air Temperature---       --Soil temp--  --Earth temp-- -State Grd.-     Weather         Rain  Fr. Pch
DD N dd ff  V ww Temp  Dpt  RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm 100cm E C GrSS   Rain SLHTGF   Press   hrs  hrs Evap
---------------------------------------------------------------------------------------------------------------------------
01 6 N   2  7 03 14.3 10.7  79 16.5 10.0  7.5 14.8 14.0 15.0 16.2 16.8 16.6  0 0 1  0    0.0 000000    1025   0.0  0.0  1.5
02 8 W   2  7 05 14.8 13.0  89 15.7 10.8  8.8 15.2 15.0 15.8 16.2 16.8 16.5  0 0 0  0    0.9 000000    1028   0.4  0.0  0.3
03 7 S   1  7 01 15.7 14.3  91 21.7 11.4  9.1 15.8 15.0 15.7 16.2 16.5 16.4  1 1 2  0    0.0 000000    1031   0.0  0.0  1.5
04 7 00  0  7 05 16.9 12.0  73 23.5 11.0  8.9 16.5 15.8 16.2 16.8 16.9 16.3  0 0 1  0    0.0 000000    1026   0.0  0.0  2.2
05 7 S   2  7 05 17.0 10.5  65 21.0 10.8  8.5 16.2 15.6 15.2 16.8 17.0 16.3  0 0 1  0    4.3 000000    1017   2.5  0.0  2.1
06 5 W   3  6 10 12.7 11.8  94 17.0 11.8 10.8 15.5 15.7 16.5 16.8 17.0 16.2  1 2 3  0     tr 000000    1014   0.0  0.0  1.2
07 3 SW  3  6 03 14.7 10.5  76 17.0  8.9  6.6 13.5 13.2 14.9 16.2 16.9 16.2  1 0 3  0    7.2 000000    1011  13.8  0.0  1.0
08 7 N   2  4 10 13.4 12.9  97 14.0 12.3 11.5 15.0 15.0 15.4 16.0 16.5 16.2  1 2 3  0    0.4 000000    1008   0.8  0.0  0.6
09 6 W   3  6 05 13.2 11.7  91 15.1  7.9  6.0 13.1 12.4 13.5 15.1 16.0 16.0  1 1 3  0    7.4 000000    1015   7.4  0.0  0.6
10 7 SW  4  5 05 15.0 13.9  93 15.5 11.3 10.9 15.5 15.0 14.9 15.7 16.0 15.9  1 1 3  0    4.7 000000    1011   4.4  0.0  0.3
11 7 S   4  7 20 15.7 14.8  95 21.0 12.9 11.8 15.5 15.0 15.2 15.8 16.0 15.9  1 2 3  0    0.9 000000    1018   1.5  0.0  0.7
12 3 W   1  6 05 12.1 11.7  68 19.9  8.0  6.5 12.2 12.6 14.2 15.5 16.0 15.9  1 1 1  0    0.0 000000    1031   0.0  0.0  2.4
13 2 S   5  7 02 17.3 10.0  62 21.2 12.1 10.6 15.0 14.3 15.1 15.9 16.0 15.9  1 0 1  0    0.0 000000    1027   0.0  0.0  3.8
14 1 S   4  6 02 17.7 13.3  75 23.5 14.2 12.5 16.6 15.5 15.8 16.2 16.2 15.9  0 0 1  0    0.0 000000    1029   0.0  0.0  2.5
15 2 SW  3  6 05 17.4 13.4  77 22.9 14.1 11.1 16.1 15.4 16.0 16.3 16.2 15.8  0 0 1  0    0.0 000000    1025   0.0  0.0  2.4
16 4 S   2  6 05 16.7 12.6  77 22.7 10.9  8.3 15.1 14.5 15.6 16.3 16.4 15.9  0 0 1  0    0.0 000000    1024   0.0  0.0  3.9
17 5 S   5  5 05 18.3 11.6  65 22.8 12.1  8.0 15.0 14.6 15.6 16.1 16.3 15.9  0 0 1  0     tr 000000    1017   0.0  0.0  3.2
18 7 SW  3  5 05 16.7 15.3  92 17.6 15.0 14.0 16.5 16.4 16.5 16.3 16.3 15.9  0 1 3  0    8.6 000000    1014   8.0  0.0  0.5
19 8 W   1  5 63 15.0 14.1  94 15.1 14.8 14.3 16.1 16.2 15.3 16.3 16.3 15.9  1 3 3  0   32.5 000000    1013  24.0  0.0  0.2
20 7 W   1  5 63 12.4 12.2  99 13.8 11.8 11.3 14.1 14.4 15.1 16.0 16.1 15.9  1 3 3  0    5.5 000000    1019   8.6  0.0  0.2
21 5 S   2  5 10 14.2 13.5  95 19.2  8.3  6.0 13.0 12.7 13.6 15.0 16.0 15.9  1 1 1  0   12.9 000000    1015   6.3  0.0  0.5
22 8 NW  3  4 63 11.9 10.8  93 14.2 11.0 10.9 14.6 15.0 15.6 15.6 15.9 15.8  1 3 3  0    4.2 000000    1003   3.4  0.0  1.0
23 3 N   3  7 01  9.5  4.1  69 13.7  6.0  2.7 10.6 11.4 13.2 15.0 15.9 15.7  1 1 3  0    0.4 004000    1022   0.2  0.0  1.3
24 1 SW  2  7 02 13.0 10.1  83 17.2  7.9  4.6 11.8 12.0 13.3 14.7 15.3 15.6  1 1 3  0    0.0 000000    1030   0.0  0.0  1.8
25 4 SW  4  6 05 12.8  7.3  69 15.8  7.7  3.9 10.5 11.4 12.9 14.3 15.2 15.3  1 0 1  0    3.0 000000    1025   2.2  0.0  2.4
26 8 NW  4  5 63 11.7 11.1  96 14.3 11.7 10.1 13.3 13.3 13.7 14.4 14.9 15.1  1 3 3  0     tr 000000    1018   0.0  0.0  1.4
27 5 00  0  7 25 11.1  8.3  83 13.1  7.4  4.1 11.9 12.0 13.1 14.2 15.0 15.1  1 1 1  0     tr 000000    1022   0.0  0.0  0.7
28 1 W   1  7 01 10.8  7.5  80 15.0  7.0  3.3 11.4 11.9 12.8 14.0 14.9 15.0  1 0 1  0   11.4 000000    1016   3.2  0.0  0.7
29 7 S   2  7 02 12.7 12.0  95 14.3  6.2  3.5 12.5 12.7 13.0 13.8 14.6 14.9  1 2 3  0   55.4 000000    1009  16.5  0.0  0.5
30 7 SE  1  7 01 13.0 11.9  93 17.0 11.2 10.0 13.3 13.0 13.3 13.9 14.3 14.9  1 2 3  0     tr 000000    1006   0.0  0.0  0.8

------------------------------------------------------------------------------------------------------------------
Mean
   5             14.3 11.6  84 17.7 10.5  8.5 14.2 14.0 14.7 15.6 16.0 15.8                            1019
Total                                                                                  159.7                103.2  0.0 42.2
---------------------------------------------------------------------------------------------------------------------------
(.) Differences from 1993-2002 average used by the Weather Observers Network & [.] from 1971-2000 average.

Air temperatures                         Weather (No. days occurrence)                       Rainfall was (172%) [174%] and
  Mean maximum     17.7    (+0.5) [+0.7]      Sleet/snow falling          0      ( 0.0)      160% of 1928-2002 average.
  Mean minimum     10.5    (+0.1) [+0.8]      Snow lying (at 09GMT)       0      ( 0.0)      Most in a day:  55.4 mm on 29th
  Mean             14.1    (+0.3) [+0.8]      Hail  <5 mm                 1      {+0.4}      No. days:
  No. days <0.0C      0    ( 0.0)             Hail >=5 mm                 0   {all types}      0.0 mm         9      (- 1.7)
  Mean grass min    8.5    (+0.3)             Thunder heard               0      (-0.8)      >=0.2 mm        16      (+ 1.0)
  Lowest grass min  2.7    (-0.1)             Gales                       0                  >=1.0 mm        12      (- 0.4)
  No. days <0.0C      0    ( 0.0)             Fog (at 09GMT)              0                  >=5.0 mm         8      (+ 1.3)
  Mean soil 30cm   15.6    (+0.2)
                                                                                             Lysimeter:
  Highest maximum 23.5C (+0.5) on 4,14th. Lowest minimum   6.0C (-0.3) on 23rd.                     PE      25.5 mm
  Minimum relative humidity:  52% on 16th.    No. days at 30 cm >=5.6C 30; days <5.6C nil.          PWB    134.2 mm
* Rainfall of 55.4 mm on 29th was highest in Sep at this station and 2nd highest fall               PWS    145.1 mm
* in any month (69.1 mm in March 1981). But 82.6 mm fell in Llansadwrn on 19th Sep 1946.            PWD    -11.0 mm
* Mean and mean min ranked 9th warmest in Sep while mean max was ranked 8th.
*                                                                                            Piche:         42.2 ml
---------------------------------------------------------------------------------------------------------------------------
Key: Observations at 09GMT...
  DD date; N cloud (oktas, 9=obscured); dd wind direction (8 sectors, 00=calm); ff wind speed (Beaufort scale);
  V visibility (0 dense fog, 1 thick fog, 2 fog, 3 moderate fog, 4 very poor, 5 poor, 6 moderate, 7 good, 8 very good);
  ww present weather SYNOP code (eg. 01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze)
  Temperatures (degC); Temp dry bulb temperature; Dpt dewpoint; RH relative humidity (%); soil temperatures are under bare
  soil and earth under grass; SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C,
  and grass Gr codes consult the page on 'Recording Atmospheric Depositions on Grass'.
24 hour observations...
  Max maximum temperature (degC) beginning 09GMT; Min minimum temperature ending 09GMT;
  Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap Piche evaporation (ml) beginning 09GMT;
  Rain rainfall beginning 09GMT (mm); Rain hrs hours of rainfall (>0.1mm/hr) 09-09GMT; Fr. hrs hours of frost (00-24GMT).
Monthly observations...
  PE Potential evapotranspiration, PWB Potential water balance, PWS Potential water surplus, PWD Potential water deficit.
Weather: days with...
  s slight or S heavy snow/sleet falling; L >=50% snow cover at 09GMT; H categories of hail: 1 ice crystals, 2 snow grains,
  3 snow pellets, 4 ice pellets, 5 hail 5-9 mm, 6 hail 10-19 mm; t slight or T heavy thunder heard; G gale; F fog code.
---------------------------------------------------------------------------------------------------------------------------

             

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October 2003

                                           CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR OCTOBER 2003
---------------------------------------------------------------------------------------------------------------------------
  -09GMT-->       ---Air Temperature---       --Soil temp--  --Earth temp-- -State Grd.-     Weather         Rain  Fr. Pch
DD N dd ff  V ww Temp  Dpt  RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm 100cm E C GrSS   Rain SLHTGF   Press   hrs  hrs Evap
---------------------------------------------------------------------------------------------------------------------------
01 1 E   1  7 04 14.0  9.3  73 16.7 10.3  6.3 12.2 12.6 13.5 14.0 14.5 14.8  1 0 1  0    0.0 000000    1010   0.0  0.0  1.6
02 1 NE  1  7 04 11.6  9.7  77 16.9  8.5  5.9 10.4 11.3 13.0 14.0 14.7 14.8  1 0 1  0     tr 000000    1013   0.0  0.0  1.0
03 8 00  0  6 50 12.5 12.1  98 14.3  9.8  7.8 12.9 12.8 13.4 14.0 14.4 14.5  1 3 3  0    0.1 000000    1012   0.0  0.0  0.8
04 6 NE  2  7 05 10.2  5.9  75 13.1  8.3  5.8 11.1 11.5 12.9 13.8 14.4 14.5  1 0 1  0    3.4 004000    1015   2.2  0.0  1.8
05 6 NW  2  7 25  7.3  6.6  96 13.1  5.5  2.8  9.5  9.8 11.5 13.1 14.0 14.5  1 3 3  0   11.4 004000    1021   7.5  0.0  1.0
06 8 NW  3  6 80  9.9  7.8  87 12.0  7.3  6.6 11.0 11.3 12.1 13.2 13.8 14.4  1 3 3  0    0.4 000000    1008   0.8  0.0  1.4
07 6 N   3  6 80  9.3  7.6  89 14.1  8.7  7.1 10.5 10.8 11.9 12.9 13.7 14.2  1 2 3  0    3.2 000000    1008   3.2  0.0  1.3
08 8 W   4  7 02 14.1 13.4  95 16.3  9.3  6.5 13.0 12.6 12.7 13.2 13.5 14.0  1 2 3  0    0.1 000000    1015   0.0  0.0  0.4
09 8 SW  5  7 02 13.2 11.3  88 14.6 11.7 10.4 13.0 13.0 13.2 13.6 13.8 14.0  1 2 3  0    1.1 000000    1018   0.6  0.0  0.8
10 5 W   3  7 05 10.2  8.8  91 16.3  8.0  4.5 11.0 11.8 13.0 13.5 13.8 13.9  1 2 3  0    0.0 000000    1017   0.0  0.0  1.0
11 6 W   2  8 03 12.3  9.8  85 17.6  7.6  5.5 11.5 11.7 12.7 13.2 13.8 14.0  1 0 1  0    0.0 000000    1023   0.0  0.0  1.3
12 7 SE  2  7 05 13.0  8.0  71 16.0 11.6  9.3 12.4 12.6 13.3 13.6 13.8 14.0  1 0 1  0    2.6 000000    1023   6.5  0.0  1.3
13 8 00  0  6 10 11.3 10.9  97 13.6 10.3  8.3 12.2 12.5 13.0 13.4 13.8 14.0  1 3 3  0    0.8 000000    1019   2.5  0.0  0.6
14 6 SE  3  7 05 12.1  7.8  75 17.3  8.8  6.3 11.5 11.8 12.8 13.2 13.8 13.8  1 1 3  0    0.0 000000    1023   0.0  0.0  1.8
15 6 E   3  7 05  9.7  4.3  69 15.4  6.2  4.0  9.5 10.2 11.9 11.8 13.5 13.8  1 0 1  0    0.0 000000    1027   0.0  0.0  2.4
16 1 NE  1  7 04  9.7  3.5  65 16.6  6.0  2.0  7.8  9.0 11.0 12.3 13.3 13.8  1 0 1  0    0.0 000000    1029   0.0  0.0  2.0
17 0 E   1  7 04  8.9  5.8  81 12.7  5.8  1.7  7.9  8.9 10.8 12.0 13.0 13.8  1 0 1  0    0.0 000000    1025   0.0  0.0  1.8
18 1 E   3  7 04  8.5  4.7  77 14.1  5.4  1.0  7.2  8.4 10.3 10.5 12.8 13.5  1 0 1  0    0.0 000000    1020   0.0  0.0  1.8
19 2 E   3  7 04  7.3  4.6  83 11.0  5.2  1.8  7.5  8.5 10.1 11.3 12.5 13.5  1 0 1  0     tr 000000    1015   0.0  0.0  2.3
20 5 NE  2  7 01  7.5  5.7  88  9.2  6.0  4.6  7.8  8.4 10.0 11.2 12.2 13.1  0 0 0  0    4.8 004000    1015   3.8  0.0  1.2
21 8 00  0  6 80  4.4  4.2  98  6.8  2.8  0.2  7.0  7.8  9.5 10.6 12.0 12.9  1 3 3  0    6.9 s04000    1010   7.7  0.0  0.2
22 6 E   2  7 10  4.7  4.0  95  7.5  3.0  1.4  6.5  7.3  9.0 10.1 11.7 12.8  1 2 3  0    0.3 000000    1009   0.1  0.0  0.7
23 1 E   3  7 05  5.7  4.1  89  9.9  4.1  1.8  6.2  7.0  9.0 10.0 11.5 12.5  1 2 3  0    0.2 000000    1020   0.0  0.0  1.2
24 7 N   2  7 87  7.0  5.7  91 10.2  2.2 -1.4  6.5  7.0  8.5 10.0 11.2 12.5  1 3 4  0    2.8 004t00    1025   2.0  0.0  1.0
25 7 N   1  7 10  5.4  5.2  98 12.3  4.5  0.6  6.8  7.3  8.7  9.8 11.0 12.2  1 2 3  0    2.6 004000    1025   2.2  0.0  1.3
26 6 NE  2  7 02  7.2  3.4  77  9.7  5.3  3.3  6.8  7.6  9.0 10.0 11.0 12.0  1 1 4  0    0.0 000000    1019   0.0  0.0  0.8
27 1 S   1  7 02  5.7  4.1  89 11.7  3.5 -0.5  5.6  6.5  8.2  9.5 10.8 12.0  1 0 4  0    0.0 000000    1022   0.0  0.0  1.4
28 7 SW  2  7 05  9.5  7.6  88 10.5  5.7  3.4  8.0  8.0  8.8  9.5 10.3 11.8  1 1 1  0    2.5 000000    1013   6.0  0.0  0.3
29 5 W   1  7 01  6.3  6.1  98  8.2  4.7  0.8  7.4  8.0  9.2  9.8 10.5 11.8  1 2 3  0    3.7 000000     992   4.2  0.0  0.1
30 6 SE  1  7 01  3.5  2.8  95  9.6  2.1 -1.6  5.2  6.2  8.0  9.2 10.3 11.6  1 2 4  0    7.2 000000     985  12.2  0.0  0.9
31 8 NE  4  5 61  7.3  6.9  97  9.4  2.8  1.5  7.8  8.1  8.7  9.2 10.3 10.5  1 3 3  0    2.0 000000     979   3.7  0.0  1.6
------------------------------------------------------------------------------------------------------------------
Mean
   5              9.0  6.8  86 12.8  6.5  3.8  9.2  9.7 11.0 11.8 12.7 13.3                            1015
Total                                                                                   56.1                 65.2  0.0 37.1
---------------------------------------------------------------------------------------------------------------------------
(.) Differences from 1993-2002 average used by the Weather Observers Network & [.] from 1971-2000 average.

Air temperatures                         Weather (No. days occurrence)                       Rainfall was (48%) [50%] and
  Mean maximum     12.8    (-1.4) [-1.0]      Sleet/snow falling          1      (+0.8)      47% of 1928-2002 average.
  Mean minimum      6.5    (-1.6) [-0.8]      Snow lying (at 09GMT)       0      ( 0.0)      Most in a day:  11.4 on 5th.
  Mean              9.7    (-1.5) [-0.9]      Hail  <5 mm                 6      {+4.5}      No. days:
  No. days <0.0C      0    ( 0.0)             Hail >=5 mm                 0   {all types}      0.0 mm        10      (+ 1.4)
  Mean grass min    3.8    (-1.7)             Thunder heard               1      (+0.6)      >=0.2 mm        17      (- 2.7)
  Lowest grass min -1.6    (-0.8)             Gales                       0                  >=1.0 mm        13      (- 2.9)
  No. days <0.0C      3    (+0.6)             Fog (at 09GMT)              0                  >=5.0 mm         3      (- 5.3)
  Mean soil 30cm    11.8   (-0.3)
                                                                                             Lysimeter:
  Highest maximum 17.6C (-2.1) on 11th. Lowest minimum   2.1 (-1.1) on 30th.                        PE      10.3 mm
  Minimum relative humidity:  50% on 16th.    No. days at 30 cm >=5.6C 31; days <5.6C nil.          PWB     45.8 mm
* With 56.1 mm rainfall was driest Oct since 1997 (53.6 mm), ranks 9th driest since 1928.           PWS     48.9 mm
* Mean of 9.7C was coolest Oct since 1993 (8.7C), ranks 6th coolest on 25-y record.                 PWD     -3.1 mm
* Both mean max 12.8C and mean min 6.5 C coolest since 1993 with 12.1C and 5.3C respectively.
* Lo max of 6.8C on the 21st was coldest in October on station's 25-y record.                Piche:         37.1 ml
---------------------------------------------------------------------------------------------------------------------------
Key: Observations at 09GMT...
  DD date; N cloud (oktas, 9=obscured); dd wind direction (8 sectors, 00=calm); ff wind speed (Beaufort scale);
  V visibility (0 dense fog, 1 thick fog, 2 fog, 3 moderate fog, 4 very poor, 5 poor, 6 moderate, 7 good, 8 very good);
  ww present weather SYNOP code (eg. 01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze)
  Temperatures (degC); Temp dry bulb temperature; Dpt dewpoint; RH relative humidity (%); soil temperatures are under bare
  soil and earth under grass; SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C,
  and grass Gr codes consult the page on 'Recording Atmospheric Depositions on Grass'.
24 hour observations...
  Max maximum temperature (degC) beginning 09GMT; Min minimum temperature ending 09GMT;
  Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap Piche evaporation (ml) beginning 09GMT;
  Rain rainfall beginning 09GMT (mm); Rain hrs hours of rainfall (>0.1mm/hr) 09-09GMT; Fr. hrs hours of frost (00-24GMT).
Monthly observations...
  PE Potential evapotranspiration, PWB Potential water balance, PWS Potential water surplus, PWD Potential water deficit.
Weather: days with...
  s slight or S heavy snow/sleet falling; L >=50% snow cover at 09GMT; H categories of hail: 1 ice crystals, 2 snow grains,
  3 snow pellets, 4 ice pellets, 5 hail 5-9 mm, 6 hail 10-19 mm; t slight or T heavy thunder heard; G gale; F fog code.
---------------------------------------------------------------------------------------------------------------------------
               

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November 2003

                                  CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR NOVEMBER 2003
---------------------------------------------------------------------------------------------------------------------------
  -09GMT-->       ---Air Temperature---       --Soil temp--  --Earth temp-- -State Grd.-     Weather         Rain  Fr. Pch
DD N dd ff  V ww Temp  Dpt  RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm 100cm E C GrSS   Rain SLHTGF   Press   hrs  hrs Evap
---------------------------------------------------------------------------------------------------------------------------
01 5 00  0  7 10  7.1  6.7  97 11.3  7.0  4.5  7.7  8.0  8.8  9.3 10.2 11.2  1 2 3  0   18.5 000000     997   8.0  0.0  0.9
02 7 SW  3  6 89 10.0  9.0  93 11.6  5.7  3.7  9.2  9.3  9.4  9.6 10.2 11.2  1 5 5  0    7.9 006000     982   5.0  0.0  1.0
03 6 W   5  7 05  9.2  7.7  91 12.0  7.6  5.4  8.5  8.7  9.1  9.8 10.2 11.1  1 2 4  0    0.0 005000     995   0.0  0.0  1.2
04 7 S   6  7 05 11.3  8.7  84 15.4  5.2  0.7  8.5  8.3  8.8  9.3 10.1 11.1  1 2 1  0    0.0 000000    1017   0.0  0.0  3.0
05 5 S   5  7 01 15.2  9.9  70 18.7 11.3  9.5 10.7 10.5 10.3 10.2 10.2 11.0  1 0 0  0     tr 0000G0    1018   0.0  0.0  4.1
06 1 SE  1  7 04  9.6  8.8  95 17.5  8.6  4.6  8.9  9.8 10.5 10.5 10.7 11.1  1 1 1  0    0.0 000000    1024   0.0  0.0  1.4
07 1 SE  1  7 04 11.5  7.8  78 18.1  9.6  5.0  8.6  9.4 10.3 10.4 11.0 11.1  1 0 1  0    0.0 000000    1025   0.0  0.0  2.4
08 6 E   4  6 04  7.3  5.0  86  9.6  5.4  0.2  6.8  7.4  9.0 10.0 10.8 11.2  1 0 1  0    0.0 000000    1023   0.0  0.0  1.1
09 6 SE  1  5 04  8.0  4.8  80 13.5  4.5 -0.2  6.3  7.0  8.5  9.5 10.2 11.1  1 0 1  0    1.7 000000    1013   1.4  0.0  1.4
10 5 S   2  6 04 10.1  7.8  86 14.2  7.8  4.5  7.8  8.2  9.1  9.8 10.4 11.2  1 2 3  0    0.0 000000    1020   0.0  0.0  1.0
11 7 SE  1  7 04  9.9  6.5  79 12.6  6.5  1.5  7.8  8.2  9.0  9.7 10.4 11.1  1 1 1  0    1.5 000000    1016   3.5  0.0  1.1
12 1 W   1  7 10  6.3  5.9  97 13.4  5.4  0.6  7.4  8.5  9.8  9.8 10.3 11.0  1 2 1  0    4.5 000000    1015   1.0  0.0  0.9
13 8 S   1  7 10  8.2  7.6  96 11.5  5.5  0.0  6.5  7.2  8.5  9.5 10.3 11.0  1 2 3  0    9.2 000000    1019   9.7  0.0  1.4
14 6 SW  7  6 25  8.9  8.1  95 10.2  8.2  7.3  8.8  9.0  9.3  9.8 10.1 11.0  1 3 3  0    5.2 0000G0     993   3.5  0.0  0.4
15 4 W   1  7 10  5.6  5.4  98 10.6  5.3  0.8  7.0  7.8  9.0  9.6 10.1 11.0  1 2 1  0    1.6 000000    1010   0.4  0.0  0.3
16 3 NW  1  7 01  4.3  4.3 100 11.5  2.3 -1.9  4.8  5.7  7.5  8.8 10.0 11.0  1 2 4  0    5.2 004000    1018   5.2  0.0  1.0
17 8 SW  1  4 60 11.5 11.5 100 12.5  4.0 -0.9  9.1  8.5  8.1  8.8 10.0 10.8  1 3 3  0    2.3 000000    1015   3.2  0.0  0.0
18 8 SW  4  7 02 12.5 11.6  94 13.0 11.5 11.0 10.9 10.7 10.0  9.8  9.9 10.6  1 2 3  0    0.5 000000    1017   1.0  0.0  0.6
19 8 W   5  5 21 12.2 12.0  99 12.3 11.5 10.8 11.2 11.0 10.8 10.2 10.5 10.6  1 2 3  0   27.7 000000    1017  19.3  0.0  0.3
20 8 SW  4  5 02 10.3 10.1  99 10.3  9.6  9.2 10.2 10.2 10.5 10.6 10.6 10.9  2 3 3  0    3.0 000000    1008   2.0  0.0  0.1
21 7 NW  1  7 10  4.8  4.3  97 10.1  3.5 -1.2  5.5  6.7  8.8  9.9 10.2 10.8  1 2 3  0     tr 000000    1009   0.0  0.0  0.5
22 7 NE  1  7 03  4.9  3.2  89  8.9  3.2 -1.8  5.0  5.8  7.5  8.8 10.0 10.9  1 2 4  0  tr-fr 000000    1004   0.0  0.0  0.2
23 1 00  0  7 04  3.2  2.7  97 10.2  2.4 -2.5  3.0  4.3  6.5  8.0  9.5 10.8  1 0 5  0  tr-fr 000000    1006   0.0  0.0  0.5
24 7 NW  1  7 03  4.2  3.7  97 10.3  2.5 -2.5  3.5  4.1  6.0  7.5  9.0 10.4  1 1 5  0    5.5 000000    1009   5.1  0.0  0.8
25 7 W   1  7 10  7.7  6.8  94  9.6  4.2  2.1  7.9  8.0  8.0  8.0  8.8 10.1  1 2 3  0   22.0 000000    1001  12.5  0.0  0.5
26 3 SW  2  7 01  4.6  3.6  93  6.5  4.6  1.2  6.1  7.0  7.8  8.2  9.0 10.0  1 2 3  0    1.1 004000     981   1.8  0.0  0.4
27 1 NW  1  7 10  3.1  2.9  98  9.0  1.6 -2.3  3.0  4.2  6.1  7.0  8.8 10.0  1 2 5  0  tr-fr 004000     997   0.0  0.0  0.7
28 7 S   2  7 05  7.0  5.0  87 11.3  2.4 -2.0  4.0  4.3  5.6  7.0  8.2 10.0  1 2 4  0    1.4 000000    1004   2.2  0.0  1.4
29 8 SE  2  6 21 10.5  8.9  90 12.6  7.0  5.8  8.5  8.2  8.0  7.8  8.2  9.8  1 3 3  0    4.2 000000     991   2.5  0.0  0.7
30 7 00  0  7 02  5.2  4.5  95  7.0  4.9  0.3  5.2  6.1  7.1  7.8  8.6  9.6  1 2 3  0    3.4 000000     999   6.2  0.0  0.3

------------------------------------------------------------------------------------------------------------------
Mean
   6              8.1  6.8  92 11.8  6.0  2.4  7.3  7.7  8.6  9.2  9.9 10.8                            1008
Total                                                                                  126.4                 93.5  0.0 29.6
---------------------------------------------------------------------------------------------------------------------------
(.) Differences from 1993-2002 average used by the Weather Observers Network & [.] from 1971-2000 average.

Air temperatures                         Weather (No. days occurrence)                       Rainfall was (95%) [101%] and
  Mean maximum     11.8    (+1.2) [+1.8]      Sleet/snow falling          0      (-0.5)      101% of 1928-2002 average.
  Mean minimum      6.0    (+0.4) [+0.5]      Snow lying (at 09GMT)       0      (-0.1)      Most in a day:  27.7 mm on 19th
  Mean              8.9    (+0.8) [+1.2]      Hail  <5 mm                 3      {+0.8}      No. days:
  No. days <0.0C      0    (-1.3)             Hail >=5 mm                 2    {all types}     0.0 mm         6      (+ 1.1)
  Mean grass min    2.4    (-0.2)             Thunder heard               0      (-0.8)      >=0.2 mm        19      (- 3.2)
  Lowest grass min -2.5    (+0.9)             Gales                       2                  >=1.0 mm        18      (+ 0.9)
  No. days <0.0C      9    (+0.2)             Fog (at 09GMT)              0                  >=5.0 mm         8      (- 0.9)
  Mean soil 30cm    9.2    (+0.3)
                                                                                             Lysimeter:
  Highest maximum 18.7C (+3.6) on 5th. Lowest minimum   1.6 (+0.7) on 27th.                         PE      -0.5 mm
  Minimum relative humidity:  35% on 7th.     No. days at 30 cm >=5.6C 30; days <5.6C nil.          PWB    126.9 mm
* A warm month with mean 8.9C (+0.8) [+1.2] ranks 4 (10.1C in 1994). Hi max 18.7C and               PWS    127.8 mm
* mean 15.0C on the 5th are highest on record since 1979 (17.3C & 14.6C respectively) in 1997.      PWD     -0.9 mm
* Mean min 6.0C ranks 4th highest (7.9C in 1994). Rainfall was average and not as wet as
* 2002 (184.6 mm) but wetter than 2001 (107.7 mm).                                           Piche:         29.6 ml
---------------------------------------------------------------------------------------------------------------------------
Key: Observations at 09GMT...
  DD date; N cloud (oktas, 9=obscured); dd wind direction (8 sectors, 00=calm); ff wind speed (Beaufort scale);
  V visibility (0 dense fog, 1 thick fog, 2 fog, 3 moderate fog, 4 very poor, 5 poor, 6 moderate, 7 good, 8 very good);
  ww present weather SYNOP code (eg. 01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze)
  Temperatures (degC); Temp dry bulb temperature; Dpt dewpoint; RH relative humidity (%); soil temperatures are under bare
  soil and earth under grass; SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C,
  and grass Gr codes consult the page on 'Recording Atmospheric Depositions on Grass'.
24 hour observations...
  Max maximum temperature (degC) beginning 09GMT; Min minimum temperature ending 09GMT;
  Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap Piche evaporation (ml) beginning 09GMT;
  Rain rainfall beginning 09GMT (mm); Rain hrs hours of rainfall (>0.1mm/hr) 09-09GMT; Fr. hrs hours of frost (00-24GMT).
Monthly observations...
  PE Potential evapotranspiration, PWB Potential water balance, PWS Potential water surplus, PWD Potential water deficit.
Weather: days with...
  s slight or S heavy snow/sleet falling; L >=50% snow cover at 09GMT; H categories of hail: 1 ice crystals, 2 snow grains,
  3 snow pellets, 4 ice pellets, 5 hail 5-9 mm, 6 hail 10-19 mm; t slight or T heavy thunder heard; G gale; F fog code.
---------------------------------------------------------------------------------------------------------------------------

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December 2003

           
                                               CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR DECEMBER 2003
---------------------------------------------------------------------------------------------------------------------------
  -09GMT-->       ---Air Temperature---       --Soil temp--  --Earth temp-- -State Grd.-     Weather         Rain  Fr. Pch
DD N dd ff  V ww Temp  Dpt  RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm 100cm E C GrSS   Rain SLHTGF   Press   hrs  hrs Evap
---------------------------------------------------------------------------------------------------------------------------
01 8 NE  4  7 05  7.0  4.7  85  9.5  2.6 -2.0  5.4  5.7  6.7  7.3  8.3  9.6  1 2 4  0    8.8 000000    1004   8.8  0.0  0.8
02 8 NE  1  5 10  8.8  8.4  97 10.0  7.0  5.9  7.8  7.8  7.8  7.8  8.2  9.4  1 2 3  0     tr 000000    1012   0.0  0.0  0.3
03 8 NE  1  4 80  8.6  8.2  97  9.2  4.5 -0.2  7.0  6.9  7.1  7.7  8.3  9.3  1 2 3  0    0.4 000000    1024   0.5  0.0  0.4
04 8 E   2  6 04  7.7  6.4  91  8.5  6.0  3.1  6.8  6.9  7.4  7.8  8.2  9.2  1 2 1  0     tr 000000    1033   0.0  0.0  0.8
05 3 NE  1  7 04  7.5  3.8  77 11.3  5.2  3.0  4.8  5.4  6.7  7.4  8.2  9.2  1 2 1  0    0.3 000000    1031   0.1  0.0  0.5
06 5 E   4  5 01  8.2  7.6  96  8.4  5.1  1.0  7.4  7.4  7.3  7.6  8.1  9.2  1 2 2  0    0.0 000000    1031   0.0  0.0  1.0
07 1 SE  3  7 04  3.2 -1.6  71  8.0  0.8 -4.5  2.1  3.5  5.7  7.0  8.1  9.2  3 1 5  0    0.0 000000    1031   0.0  4.6  1.0
08 0 E   1  7 04 -0.9 -3.4  83  8.0 -2.5 -9.2  1.0  2.3  4.0  5.5  7.5  9.1  3 5 7  0    0.0 000000    1020   0.0 10.2  0.8
09 7 SE  1  7 04  6.1  4.7  91  9.7 -1.1 -7.1  4.0  4.1  4.5  5.4  7.0  8.8  1 1 4  0    0.0 000000    1014   0.0  0.0  0.8
10 8 S   2  7 05  8.6  6.2  85  9.4  4.6  0.8  5.5  5.5  5.2  5.8  6.8  8.6  1 1 0  0   10.6 000000    1014   8.2  0.0  0.8
11 6 N   2  6 01  9.1  8.7  97  9.1  8.0  7.2  7.5  7.5  7.0  6.8  7.2  8.5  1 2 3  0    2.1 000000    1002   3.9  0.0  0.7
12 8 S   2  7 10  7.7  7.3  97 11.7  2.0  0.0  5.5  5.5  6.0  6.5  7.3  8.5  1 2 3  0   26.1 000003    1012  17.0  0.0  0.2
13 7 W   3  5 10 11.0 11.0 100 11.0  7.7  7.0  9.9  9.5  8.7  8.0  7.8  8.3  1 2 3  0    1.0 000000    1004   1.8  0.0  0.6
14 7 NW  2  6 10  6.1  4.7  91  9.2  5.0  2.3  5.0  6.0  7.2  7.7  8.1  8.5  1 2 3  0    0.8 000000    1017   1.0  0.0  0.7
15 7 N   1  7 03  4.0  3.0  93  7.3  2.8 -0.1  4.5  5.5  6.5  7.2  7.9  8.6  1 2 3  0    0.0 000000    1029   0.0  0.0  0.7
16 8 SW  2  7 05  7.0  4.2  82  8.3  1.8 -1.2  5.0  5.1  5.9  6.6  7.6  8.8  1 1 0  0    0.0 000000    1026   0.0  0.0  1.5
17 1 N   1  7 04  2.6  1.6  93  8.7  2.6 -1.0  3.5  5.0  6.2  6.8  7.5  8.7  1 0 5  0    0.0 000000    1020   0.0  0.0  0.9
18 6 NW  1  7 04  4.0  0.0  75  8.0  2.2 -1.7  1.5  2.7  4.6  5.6  7.1  8.5  1 0 7  0    0.7 000000    1015   1.9  0.0  0.6
19 9 N   1  2 42  7.0  7.0 100  8.2  3.7  0.1  5.5  5.2  5.2  5.8  6.8  8.5  1 3 3  0    1.9 000002    1016   6.1  0.0  0.4
20 8 SE  1  5 61  6.2  5.8  97  7.2  3.1 -0.1  5.8  5.9  6.0  6.2  6.9  8.4  1 3 3  0    7.7 004000     999   7.5  0.0  0.6
21 6 N   3  7 01  5.5  1.8  77  6.0  3.5  1.2  4.4  5.0  5.8  6.1  7.1  8.2  1 2 4  0    2.1 004000    1010   2.5  0.0  2.2
22 7 N   1  7 85  2.1  0.8  91  8.2  2.1  0.1  1.8  2.6  4.2  5.3  6.7  8.2  1 5 9  0    3.1 s03000    1031   8.8  0.0  0.5
23 8 W   2  6 10  8.2  8.0  99  9.7  2.1  0.5  6.0  5.8  5.5  5.8  6.4  8.0  1 2 3  0    1.0 000000    1023   1.8  0.0  0.1
24 8 SW  2  7 02  8.6  8.0  96  9.5  8.2  7.1  7.2  7.2  7.0  6.8  7.0  7.9  1 2 3  0    0.4 000000    1025   0.9  0.0  0.8
25 8 SW  5  5 10  9.5  8.9  96  9.8  8.6  7.5  8.1  7.9  7.5  7.2  7.3  8.0  1 2 3  0   32.4 000000    1015  16.8  0.0  0.2
26 8 S   6  5 63  9.0  8.8  97  9.0  8.7  8.1  8.5  8.3  8.1  8.0  7.8  8.2  2 3 3  0   19.0 005000     996   7.8  0.0  0.4
27 6 W   1  7 01  3.0  2.0  93  4.8  2.5  0.0  3.5  4.5  6.1  6.9  7.6  8.2  1 2 6  0    1.1 004000     991   0.9  0.0  0.4
28 6 E   5  7 05  3.5  0.0  78  5.0  0.0 -2.8  2.8  3.6  5.1  6.0  7.1  8.2  1 2 6  0    0.0 003000    1000   0.0  0.0  0.5
29 6 NE  1  7 01  1.5  0.4  92  4.5  0.3 -3.0  1.1  2.4  4.0  5.1  6.5  8.2  3 5 5  0    0.0 000000    1003   0.0  0.0   fr
30 8 SE  1  7 02 -0.5 -1.7  92  2.5 -1.8 -5.6  0.8  1.7  3.0  4.3  6.1  8.0  3 5 7  0    0.0 000000    1015   0.0 16.2  1.2
31 7 SE  1  7 04  2.1 -2.2  73  7.0 -1.2 -4.3  1.1  1.9  3.0  4.0  5.8  7.7  3 1 5  0   17.0 0000G0    1025  11.2  6.8  1.2
------------------------------------------------------------------------------------------------------------------
Mean
   6              5.9  4.3  90  8.3  3.4  0.4  4.9  5.3  6.0  6.5  7.4  8.6                            1016
Total                                                                                  136.5                107.5 37.8 21.6
---------------------------------------------------------------------------------------------------------------------------
(.) Differences from 1993-2002 average used by the Weather Observers Network & [.] from 1971-2000 average.

Air temperatures                         Weather (No. days occurrence)                       Rainfall was (108%) [119%] and
  Mean maximum      8.3    (+0.3) [+0.4]      Sleet/snow falling          1      (-2.1)      120% of 1928-2002 average.
  Mean minimum      3.4    (+0.2) [+0.3]      Snow lying (at 09GMT)       0      (-1.5)      Most in a day:
  Mean              5.9    (+0.3) [+0.4]      Hail  <5 mm                 1      {+0.7}      No. days:
  No. days <0.0C      4    (-1.3)             Hail >=5 mm                 5   {all types}      0.0 mm        10      (+ 4.0)
  Mean grass min    0.4    (-0.1)             Thunder heard               0      (-0.8)      >=0.2 mm        19      (- 2.5)
  Lowest grass min -9.2    (-2.7)             Gales                       1                  >=1.0 mm        14      (- 3.0)
  No. days <0.0C     14    (+0.1)             Fog (at 09GMT)              1                  >=5.0 mm         7      (- 2.4)
  Mean soil 30cm     .     ( 0.0)
                                                                                             Lysimeter:
  Highest maximum 11.7C (-1.2) on 12th. Lowest minimum  -2.5 (-0.2) on 8th.                         PE       0.0 mm
  Minimum relative humidity:  53% on 17th.    No. days at 30 cm >=5.6C 25; days <5.6C 6.            PWB      0.0 mm
* Wettest December since 2000 (153.6 mm) and 1999 (193.8 mm) ranking 22 wettest since 1929.         PWS      0.0 mm
*                                                                                                   PWD      0.0 mm
*
*                                                                                            Piche:         21.6 ml
---------------------------------------------------------------------------------------------------------------------------
Key: Observations at 09GMT...
  DD date; N cloud (oktas, 9=obscured); dd wind direction (8 sectors, 00=calm); ff wind speed (Beaufort scale);
  V visibility (0 dense fog, 1 thick fog, 2 fog, 3 moderate fog, 4 very poor, 5 poor, 6 moderate, 7 good, 8 very good);
  ww present weather SYNOP code (eg. 01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze)
  Temperatures (degC); Temp dry bulb temperature; Dpt dewpoint; RH relative humidity (%); soil temperatures are under bare
  soil and earth under grass; SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C,
  and grass Gr codes consult the page on 'Recording Atmospheric Depositions on Grass'.
24 hour observations...
  Max maximum temperature (degC) beginning 09GMT; Min minimum temperature ending 09GMT;
  Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap Piche evaporation (ml) beginning 09GMT;
  Rain rainfall beginning 09GMT (mm); Rain hrs hours of rainfall (>0.1mm/hr) 09-09GMT; Fr. hrs hours of frost (00-24GMT).
Monthly observations...
  PE Potential evapotranspiration, PWB Potential water balance, PWS Potential water surplus, PWD Potential water deficit.
Weather: days with...
  s slight or S heavy snow/sleet falling; L >=50% snow cover at 09GMT; H categories of hail: 1 ice crystals, 2 snow grains,
  3 snow pellets, 4 ice pellets, 5 hail 5-9 mm, 6 hail 10-19 mm; t slight or T heavy thunder heard; G gale; F fog code.
---------------------------------------------------------------------------------------------------------------------------
 
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Annual 2003

  -----------------------------------------------------------------------------------------------------------------------------

  Monthly and annual summary statistics at Llansadwrn, Anglesey for 2003

  (.)  Difference from 1993-2002 average used by the Weather Observers Network.                 Rainfall 1008.5 mm (95%) [102%]
  [.]  Difference from 1971-2000 average.                                                        or 97% of 1929-2002 average.
  Air temperatures                         Weather (No. days occurrence)                        Most in a day: 55.4 (Sep 29),
    Mean maximum     14.0    (+0.7) [+0.6]      Sleet/snow falling          6      (-8.2)       32.4 mm (Dec 25) and
    Mean minimum      7.3    (+0.3) [+0.9]      Snow lying (at 09GMT)       0      (-3.5)       27.8 mm (May 21).
    Mean             10.7    (+0.5) [+0.8]      Hail  <5 mm                31     [+ 5.9]       No. of days with:
    No. days <0.0C     21    (+2.3)             Hail >=5 mm                 3    [all hail]     >=0.2 mm       182      (-26)
    Mean grass min    4.5    (-0.3)             Thunder heard               7      (-1.0)       >=1.0 mm       136      (-24)
    Lowest grass min -9.2    (-0.8)             Gales                       7                   >=5.0 mm        61      (-15)
    No. days <0.0C     82   (+13.2)             Fog (at 09GMT)              4                   Lysimeter:
                                                                                                       PE     317.4 mm
    Highest maximum  31.7 on Aug 5th. Lowest minimum  -3.1 on Feb 15th.                                PWB    691.1 mm
    Minimum relative humidity:  35% on  Nov 7th and 37% on 18 & 19th Feb.                              PWS    886.5 mm
  * Frost-free (air) from Apr 11th to Dec 7th (ground) May 4th to Oct 23rd.                            PWD   -195.4 mm
    Drier than 2002 (1187.2mm), wetter than 2001 (866.0mm), ranked only 25th driest since 1929. Piche: 491.4 mls
    Mean 10.7C ranks equal warmest year with 1990 & 1997. Mean max 14.0C warmest since 1997 (14.0) ranks 4.
    Mean min 7.3C cooler than 2001 (7.4C) ranks 5th warmest. AF 21 most since 1996 (40 apart from 2001 (28).
  -----------------------------------------------------------------------------------------------------------------------------

  Annual summaries for 2003 (No. days occurrence at 09 GMT).

  Cloud cover                       Wind direction           Wind speed          Visibility   Code        Description

  Cloud obscured         4          N           34           Calm        13      <100 m          0        Dense fog        0
  8/8 cloud             90          NE          49           Force 1-3  257      100-190 m       1        Thick fog        1
  6/8 to 7/8           148          E           27           Force 4-5   81      200-390 m       2        Fog              2
  3/8 to 5/8            60          SE          34           Force 6-7   14      400-900 m       3        Mod. fog         2
  1/8 to 2/8            46          S           73           Force 8-12   0      1.0-1.9 km      4        Very poor       16
  Sky cloudless         17          SW          70                               2.0-3.9 km      5        Poor            52
                                    W           37           Check      365      4.0-9.0 km      6        Moderate        60
  Check                365          NW          28                               10 km or mo     7        Good           232
                                    Calm        13
                                                                                                          Check          365
                                    Check      365

  For information on the state of the grass, ground and concrete
  codes consult the 'Recording Atmospheric Depositions on Grass' page.

  State of grass (Atmospheric depositions on grass)

  Co  0   1  2   3  4    5        6    7    8    9 Check

  Ja  5   2  1  13  3    1        0    5    0    1   31
  Fe  4   0  2   8  3    4        2    3    1    1   28
  Ma  3   8  1   6  7    6        0    0    0    0   31
  Ap  4   7  2  11  6    0        0    0    0    0   30
  Ma  1   7  1  19  3                                31
  Ju  1  16  1  12  0    0                           30
  Ju  7   7  1  16  0    0                           31
  Au  6  13  4   8                                   31
  Se  1  13  1  15                                   30
  Oc  1  11  0  15  4                                31
  No  1   8  0  13  4    4        0    0             30
  De  2   2  1  13  3    4        2    3    0    1   31

  Yr 36  94 15 149 33   19        4   11    1    3  365

  State of ground

  Co  0   1  2   3  4    5        6    7    8    9 Check

  Ja  2  22  1   6  0    0        0    0             31
  Fe  0  19  1   6  0    2        0    0             28
  Ma  9  20  2   0  0    0                           31
  Ap 14  15  1   0  0    0        0                  30
  Ma  8  21  2                                       31
  Ju 16  14                                          30
  Ju 14  17                                          31
  Au 23   8  0                                       31
  Se  9  21  0                                       30
  Oc  1  30  0   0                                   31
  No  0  29  1   0  0                                30
  De  0  25  1   5  0    0        0    0    0        31

  Yr 96 241  9  17  0    2        0    0    0    0  365

  State of concrete

  Co  0   1  2   3  4    5        6    7    8    9 Check

  Ja  6   5 15   2  1    2        0    0             31
  Fe 11   3  9   3  0    2        0    0             28
  Ma 19   5  5   2  0    0        0                  31
  Ap 20   1  7   2  0    0                           30
  Ma 15   7  4   5                                   31
  Ju 22   3  1   4                                   30
  Ju 21   2  4   4                                   31
  Au 24   3  4   0                                   31
  Se 12   9  5   4                                   30
  Oc 12   3  9   7                                   31
  No  5   3 17   4  0    1                           30
  De  2   5 17   3  0    4        0    0             31

 Yr 169  49 97  40  1    9        0    0    0    0  365



These pages are designed and written by Donald Perkins © 1998 - 2003

Page dated 1 January 2003

http://www.llansadwrn-wx.co.uk

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