Llansadwrn (Anglesey) Weather
Daily Observations 2002
at 0900 GMT
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Llansadwrn (Anglesey) Weather |
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CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR FEBRUARY 2002
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-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
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01 0 00 0 8 04 0.0 -3.0 80 5.2 -1.7 -6.8 0.2 1.1 2.1 3.1 4.7 6.8 6 6 7 0 0.0 000000 1036 0.0 17.6 1.1
02 7 SE 1 7 04 1.0 -1.8 47 8.2 -2.3 -7.3 -0.5 0.6 1.9 2.5 4.3 6.4 6 6 7 0 0.0 000000 1027 0.0 5.3 3.4
03 7 SE 1 7 04 7.5 -0.8 55 9.2 1.0 -3.5 0.0 0.7 1.6 2.5 4.0 6.2 5 5 4 0 tr 000000 1022 0.0 0.0 2.1
04 1 00 0 7 04 1.0 -3.6 71 9.6 1.0 -3.8 0.0 0.8 1.6 2.3 3.9 6.0 3 0 5 0 1.0 000000 1023 2.5 0.0 1.2
05 8 S 2 5 51 8.2 7.8 98 8.5 1.0 -3.0 5.1 4.0 3.0 2.8 4.1 5.9 1 3 3 0 tr 000000 1029 0.0 0.0 0.2
06 8 S 1 5 10 7.2 7.0 99 9.2 2.6 -1.9 3.0 2.7 3.0 3.2 4.2 5.9 1 2 2 0 tr 000000 1034 0.0 0.0 0.5
07 8 S 2 5 05 7.4 5.6 88 7.6 7.1 6.5 5.5 5.5 5.2 4.5 4.7 6.0 1 2 0 0 tr 000000 1033 0.0 0.0 0.3
08 8 00 0 5 60 6.4 6.0 97 6.8 6.1 5.0 5.3 5.3 5.3 5.0 5.1 6.0 1 3 3 0 0.3 000000 1033 0.0 0.0 0.4
09 8 00 0 7 04 2.8 0.7 86 4.0 2.6 -1.0 3.6 4.2 5.2 4.9 5.2 6.2 1 1 4 0 0.0 000000 1032 0.0 0.0 0.5
10 0 E 1 7 04 0.0 -2.4 84 5.7 -1.1 -5.4 0.9 2.1 3.5 4.1 5.2 6.2 3 0 7 0 tr 000000 1030 0.0 0.0 0.9
11 7 S 2 7 25 5.3 4.1 92 9.0 -0.7 -5.5 2.7 2.6 3.0 3.6 4.8 6.2 1 2 3 0 0.1 000000 1026 0.0 0.0 3.9
12 7 S 4 7 03 8.0 2.0 66 12.3 5.3 3.6 4.8 5.2 5.2 4.8 5.0 6.2 1 2 3 0 tr 0000G0 1025 0.0 0.0 0.5
13 8 SW 4 5 58 10.2 9.0 92 10.5 8.0 6.4 7.4 6.8 6.1 5.7 5.5 6.2 1 3 3 0 1.7 000000 1017 1.8 0.0 0.5
14 8 S 6 5 58 9.5 7.6 88 10.1 5.8 1.8 7.0 6.8 6.5 6.2 6.0 6.3 1 3 3 0 4.3 000000 1018 5.3 0.0 0.4
15 7 W 1 7 01 4.3 4.1 98 8.0 4.3 1.0 4.8 5.2 6.0 6.2 6.2 6.5 1 2 3 0 tr 004000 1014 0.0 0.0 0.6
16 8 SW 3 6 60 7.6 7.0 96 9.5 3.2 -1.2 5.5 5.4 5.3 5.5 6.0 6.8 1 3 3 0 15.3 000000 1017 14.2 0.0 0.3
17 8 NW 1 5 63 7.8 7.8 100 9.3 7.5 6.9 7.5 7.5 7.0 6.5 6.5 7.0 1 3 3 0 0.8 000000 1011 1.0 0.0 0.4
18 8 S 4 7 10 6.0 4.9 92 9.4 2.2 1.7 4.0 4.3 5.2 6.1 6.5 7.0 1 2 3 0 1.3 000000 1014 4.5 0.0 1.5
19 6 W 3 6 01 5.5 3.6 87 10.1 5.5 2.7 4.5 5.0 5.8 6.0 6.4 7.1 1 2 3 0 0.9 000000 1006 2.2 0.0 1.3
20 8 SW 7 5 10 10.0 10.0 100 11.1 5.5 3.5 8.0 7.2 6.5 6.3 6.5 7.0 1 3 3 0 0.7 0000G0 1000 1.5 0.0 0.4
21 8 SW 7 5 60 11.0 10.0 94 11.0 9.2 7.0 9.2 8.8 8.0 7.3 7.0 7.1 1 3 3 0 8.9 0000G0 1001 6.1 0.0 1.0
22 2 W 4 7 01 5.4 4.0 91 10.1 5.4 3.0 6.0 6.8 7.5 7.4 7.4 7.2 1 2 1 0 3.8 004000 997 5.2 0.0 1.4
23 6 S 5 5 01 9.5 7.4 87 11.1 5.4 2.6 7.5 7.5 7.2 7.2 7.3 7.4 1 2 3 0 7.9 000000 983 6.3 0.0 0.8
24 7 N 5 7 60 6.0 4.1 88 6.9 6.0 5.2 7.0 7.5 7.7 7.6 7.5 7.5 1 3 3 0 2.1 000000 994 4.0 0.0 1.1
25 8 S 4 6 61 6.5 4.4 87 11.2 1.1 -2.7 4.8 5.0 6.0 6.7 7.7 7.8 1 3 3 0 17.8 0000G0 1008 14.5 0.0 1.1
26 8 SW 6 6 02 9.5 6.5 82 10.2 6.5 5.4 7.5 7.5 7.5 7.3 7.4 7.5 1 2 3 0 tr 000tG0 990 0.0 0.0 1.3
27 8 SW 1 7 05 6.7 5.7 85 12.1 5.9 3.1 5.7 6.0 6.6 7.0 7.3 7.8 1 0 1 0 1.8 0000G0 999 1.8 0.0 1.6
28 6 W 8 7 05 7.7 3.2 73 10.4 6.6 5.5 6.6 7.3 7.6 7.7 7.6 7.8 1 1 0 0 tr 0000G0 1001 0.0 0.0 2.3
29 7 S 6 7 05 9.7 5.8 77 11.0 7.3 5.3 7.5 7.7 8.0 7.8 7.8 7.8 1 0 0 0 11.0 0000G0 1012 5.8 0.0 1.1
30 8 SW 5 6 10 9.5 9.3 99 9.5 8.4 6.5 9.0 8.5 8.0 8.0 7.9 7.9 2 3 3 0 2.6 004000 1006 1.0 0.0 0.9
31 8 S 5 6 03 7.2 3.4 77 11.0 4.8 2.5 5.5 6.0 7.0 7.7 8.0 8.0 1 2 4 0 16.8 0000G0 1007 9.1 0.0 1.7
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Mean
7 6.6 4.5 86 9.3 4.2 1.4 5.0 5.2 5.5 5.6 6.1 6.8 1014
Total 99.1 86.8 22.9 34.7
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(.) Difference from 1991-2000 average used by the Weather Observers Network. Rainfall was 102% of average
Air temperatures Weather (No. days occurrence) and 101% of 1971-2000 ave.
Mean maximum 9.3 (+1.5) Sleet/snow falling 0 (-2.0) Most in a day: 17.8mm on 25th.
Mean minimum 4.2 (+1.5) Snow lying (at 09GMT) 0 (-0.4) No. days with:
Mean 6.8 (+1.5) Hail <5 mm 3 [-0.1] >=0.2 mm 18 (- 0.4)
No. days <0.0C 4 (-1.6) Hail >=5 mm 0 [all hail] >=1.0 mm 14 (- 0.4)
Mean grass min 1.4 (+1.0) Thunder heard 1 (+0.5) >=5.0 mm 6 (- 0.1)
Lowest grass min -7.3 (-0.6) Gales 9 No. dry days 3 (- 5.5)
No. days <0.0C 11 (-3.5) Fog (at 09GMT) 0
Mean soil 30cm 5.6 (+0.7) Lysimeter:
PE 8.1 mm
Highest maximum 12.3C (+0.3) on 12th. Lowest minimum -2.3 (+0.4) on 2nd. PWB 91.0 mm
Minimum relative humidity: 31% on 2nd. PWS 91.2 mm
* Mean temperature 6.8C joint warmest with 1989 in records since 1979. Mean max 9.3C PWD -0.2 mm
* was warmest on record. The mean min 4.2C, however, was 3rd warmest as both 1989 and 1990
* had a mean min of 4.5C. Piche: 34.7 ml
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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 code (01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze,
16 precipitation within sight, 17 thunderstorm no precip., 21 rain in past hour, 42 fog thinner in past hour,
51 continuous slight drizzle, 58 sl. drizzle and rain, 60 intermittent sl. rain, 63 cont. moderate rain, 80 sl. rain show
81 mod. or heavy rain shower, 83 slight sleet shower, 86 moderate snow shower, 87 shower of ice pellets.
Temperatures (degC); RH relative humidity (%); soil temperatures are under bare soil and earth under grass (degC);
SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C, and grass Gr codes consult
'Recording Atmospheric Depositions on Grass' page.
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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CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR FEBRUARY 2002
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-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
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01 8 S 8 5 62 10.5 9.9 96 11.3 5.6 2.2 8.5 7.8 7.2 7.5 7.5 8.0 2 3 3 0 13.0 0000G0 991 11.3 0.0 1.4
02 8 SW 8 6 05 11.1 8.3 83 11.1 8.5 8.5 9.0 8.8 8.4 8.0 8.0 8.0 1 2 3 0 14.2 0040G0 996 9.6 0.0 1.6
03 7 SW 8 6 01 9.0 4.5 73 9.0 5.9 5.4 7.5 7.5 7.5 8.0 8.0 8.0 1 2 3 0 2.2 0000G0 993 1.5 0.0 1.1
04 8 S 4 5 60 6.8 5.0 88 10.7 3.2 -0.7 5.5 5.7 6.5 7.2 7.8 8.0 1 3 3 0 5.7 0000G0 1001 6.0 0.0 1.2
05 5 SW 5 6 02 7.5 5.3 86 8.5 6.6 5.0 6.0 6.7 7.2 7.4 7.7 8.0 1 2 3 0 6.6 000000 988 5.8 0.0 0.8
06 2 NW 3 6 01 4.5 2.5 87 8.6 4.5 0.6 4.6 5.5 6.5 7.2 7.5 8.0 1 2 3 0 3.7 000000 1003 3.8 0.0 1.0
07 8 S 7 5 61 6.0 5.1 94 9.8 1.5 -3.5 5.0 5.3 6.0 6.5 7.3 8.0 1 3 3 0 1.5 0000G0 1009 3.0 0.0 0.6
08 8 S 3 6 80 8.5 6.8 89 10.7 6.0 5.2 7.5 7.4 7.2 7.0 7.2 8.0 1 3 3 0 15.7 000000 1013 8.0 0.0 0.8
09 7 W 5 6 01 6.8 4.0 82 9.0 5.6 3.2 6.6 7.3 8.0 7.9 7.5 7.9 1 2 3 0 0.8 004000 999 0.3 0.0 1.3
10 7 SW 4 7 10 7.0 4.5 84 10.5 5.9 3.3 6.0 6.5 7.1 7.5 7.9 7.9 1 2 3 0 33.7 000000 1006 12.8 0.0 0.4
11 6 SW 4 4 10 9.6 9.4 99 11.4 7.0 6.0 9.2 9.0 8.5 8.0 7.9 8.2 2 2 3 0 0.0 000000 994 0.0 0.0 1.0
12 7 W 4 7 05 8.1 6.4 89 10.6 7.5 4.8 7.0 7.7 8.3 8.3 8.2 8.1 1 0 1 0 0.9 000000 1006 0.8 0.0 0.9
13 6 N 5 6 10 5.5 5.0 97 7.6 5.5 0.5 6.6 7.2 7.6 7.9 8.1 8.2 1 2 3 0 0.0 000000 1018 0.0 0.0 1.6
14 5 SE 4 7 04 1.3 0.5 94 8.1 0.5 -4.0 2.7 4.1 6.0 7.2 7.9 8.2 1 0 5 0 0.4 000000 1035 1.2 0.0 0.9
15 8 W 1 5 10 5.3 4.8 97 10.5 1.3 -3.4 5.0 5.2 6.0 6.6 7.5 8.2 1 2 3 0 0.0 000000 1037 0.0 0.0 0.5
16 7 SW 1 7 04 5.0 4.1 94 9.0 2.6 -2.0 4.5 5.0 6.0 6.5 7.2 8.0 1 1 1 0 0.0 000000 1033 0.0 0.0 0.9
17 7 SW 2 7 05 7.2 4.4 83 9.3 5.0 3.0 6.0 6.2 6.5 7.0 7.3 8.0 1 0 0 0 2.4 000000 1023 3.0 0.0 0.3
18 5 NW 3 6 10 2.3 2.0 98 9.7 2.2 -3.5 3.0 4.2 5.8 6.5 7.3 8.0 1 2 5 0 2.0 000000 1024 1.3 0.0 1.1
19 8 W 3 6 10 7.5 6.4 93 9.3 2.3 -0.2 6.8 6.8 7.0 7.0 7.3 7.9 1 2 3 0 20.5 000000 1020 10.8 0.0 0.6
20 7 NW 5 6 05 6.5 2.9 78 9.4 5.2 2.6 6.2 6.5 7.0 7.4 7.5 8.0 1 2 3 0 0.1 0040G0 996 0.0 0.0 2.0
21 8 N 2 7 05 4.5 2.5 87 9.1 0.1 -4.4 3.6 4.4 5.6 6.8 7.3 7.9 1 0 4 0 14.6 000000 1020 11.6 0.0 0.6
22 7 NW 4 7 05 6.6 3.8 82 8.0 4.5 4.0 7.0 7.2 7.1 6.9 7.2 7.9 1 3 3 0 2.6 005000 1001 2.0 0.0 1.4
23 6 NW 5 7 01 2.5 0.1 84 6.5 1.6 -0.2 3.4 4.4 5.8 6.6 7.2 7.8 1 2 9 0 0.9 s04000 1002 2.2 0.0 1.0
24 8 SW 2 5 61 3.4 2.9 97 9.4 1.5 -3.2 3.8 4.0 5.2 6.6 7.0 7.8 1 3 3 0 20.5 000000 1010 22.0 0.0 0.7
25 8 SW 5 5 63 9.4 9.2 99 10.0 3.4 3.3 7.8 7.4 6.9 6.6 6.8 7.7 2 3 3 0 24.6 000000 992 15.8 0.0 0.4
26 7 W 5 7 05 6.5 4.2 85 8.6 5.6 4.2 6.7 7.2 7.5 7.4 7.2 7.7 1 2 3 0 0.7 s040G0 983 0.6 0.0 1.4
27 5 SW 5 6 05 3.5 0.0 78 7.4 2.6 -0.4 3.5 4.4 6.0 6.5 7.3 7.8 1 0 4 0 0.3 0000G0 990 1.5 0.0 2.1
28 2 W 4 7 05 3.7 0.8 81 7.8 2.2 -0.5 2.7 3.8 5.2 6.2 7.0 7.1 1 0 6 0 0.1 s03000 991 0.0 0.0 1.3
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Mean
7 6.3 4.5 88 9.3 4.1 1.3 5.8 6.2 6.8 7.1 7.5 7.9 1006
Total 187.7 134.9 0.0 28.9
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(.) Difference from 1991-2000 average used by the Weather Observers Network. Rainfall was 198% of average
Air temperatures Weather (No. days occurrence) but 250% of 1971-2000 ave.
Mean maximum 9.3 (+0.9) Sleet/snow falling 3 (-0.1) Most in a day: 33.7 on 10th.
Mean minimum 4.1 (+1.0) Snow lying (at 09GMT) 0 (-0.8) No. days with:
Mean 6.7 (+1.0) Hail <5 mm 6 [+2.7] >=0.2 mm 22 (+ 2.9)
No. days <0.0C 0 (-3.6) Hail >=5 mm 1 [all hail] >=1.0 mm 16 (+ 1.7)
Mean grass min 1.3 (+0.2) Thunder heard 0 (-0.5) >=5.0 mm 10 (+ 3.1)
Lowest grass min -4.4 (+0.3) Gales 8 No. dry days 4 (- 1.9)
No. days <0.0C 12 (+0.5) Fog (at 09GMT) 0
Mean soil 30cm 7.1 (+1.5) Lysimeter:
PE 11.9 mm
Highest maximum 11.4C (-0.8) on 11th. Lowest minimum 0.1 (+1.0) on 21st. PWB 175.8 mm
Minimum relative humidity: 58% on 14th. PWS 175.8 mm
* Wettest February since 1958 and ranked 2nd wettest in records since 1928. PWD 0.0 mm
* Mean 6.7C and mean minimum 4.1C ranked 3rd warmest in records since 1979. Mean maximum 9.3C
* ranked only 5th. All warmest since 1998. With only Feb 1995 no air frost in month. Piche: 28.9 ml
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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 code (01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze,
16 precipitation within sight, 17 thunderstorm no precip., 21 rain in past hour, 42 fog thinner in past hour,
50 slight drizzle, 60 intermittent sl. rain, 62 int. moderate rain, 63 cont. mod. rain, 80 sl. rain shower,
81 mod. or heavy rain shower, 83 slight sleet shower, 86 moderate snow shower, 87 shower of ice pellets.
Temperatures (degC); RH relative humidity (%); soil temperatures are under bare soil and earth under grass (degC);
SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C, and grass Gr codes consult
'Recording Atmospheric Depositions on Grass' page.
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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CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR MARCH 2002
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-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
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01 6 NE 4 7 05 3.8 0.4 78 6.7 2.8 0.6 3.5 4.2 5.2 6.0 6.8 7.8 1 0 1 0 0.0 000000 1012 0.0 0.0 1.4
02 8 W 1 7 05 2.5 1.5 93 7.5 -0.7 -2.7 2.4 2.8 4.5 5.5 6.5 7.5 1 0 4 0 tr 000000 1021 0.0 3.8 0.2
03 8 SW 1 6 10 6.2 5.8 97 8.6 2.5 2.5 5.5 5.7 6.0 6.0 6.5 7.5 1 2 3 0 0.0 000000 1021 0.0 0.0 0.8
04 8 W 1 7 02 6.9 4.9 87 7.8 6.2 6.0 6.5 6.6 6.7 6.6 6.8 7.5 1 0 1 0 0.4 000000 1020 0.2 0.0 0.7
05 1 SW 1 7 10 4.2 3.7 97 10.8 1.7 -1.0 3.8 5.0 6.2 6.7 7.2 7.5 1 2 4 0 3.9 000000 1017 5.0 0.0 1.5
06 5 SW 5 5 51 8.0 6.9 93 10.0 4.2 3.5 7.0 7.0 7.0 7.1 7.2 7.5 1 3 3 0 0.9 000000 1005 0.6 0.0 0.7
07 6 W 2 7 05 8.0 4.6 79 13.0 7.0 4.3 7.0 7.3 7.6 7.5 7.5 7.5 1 2 3 0 tr 000000 1018 0.0 0.0 1.2
08 8 SW 5 6 42 8.8 8.6 99 10.2 7.3 5.3 8.0 8.0 8.0 8.0 7.8 7.8 1 2 3 0 7.3 004002 1022 5.3 0.0 1.1
09 8 SW 5 5 81 5.6 4.4 92 8.7 3.3 0.5 5.4 5.7 6.8 7.5 7.8 7.8 2 3 3 0 3.4 s04000 1000 6.2 0.0 1.3
10 8 S 8 5 60 8.5 5.6 82 10.0 2.2 -1.0 6.5 6.3 6.5 7.0 7.5 8.0 1 2 3 0 2.9 0040G0 999 3.7 0.0 1.7
11 6 S 3 7 01 6.5 3.9 84 10.8 3.8 1.5 5.0 5.1 6.1 6.8 7.3 7.9 1 2 4 0 0.0 000000 1005 0.0 0.0 1.4
12 7 00 0 7 01 5.5 4.3 92 9.3 2.3 -1.2 4.4 4.8 6.0 6.8 7.3 7.8 1 0 4 0 0.0 000000 1016 0.0 0.0 1.3
13 2 E 4 7 04 4.1 1.3 82 9.0 2.5 0.3 3.6 4.5 6.0 6.8 7.5 7.9 1 0 1 0 0.0 000000 1020 0.0 0.0 2.3
14 1 E 6 7 04 3.3 -1.8 69 9.2 1.5 -0.4 2.0 3.2 5.2 6.5 7.4 8.0 1 0 5 0 0.0 000000 1014 0.0 0.0 1.9
15 8 E 6 6 02 4.8 2.8 87 10.0 3.3 2.0 5.0 5.2 6.0 6.5 7.0 7.7 1 0 0 0 2.7 000000 1004 2.8 0.0 0.9
16 6 S 4 6 01 10.0 7.3 83 13.2 4.6 4.4 7.6 7.0 7.0 6.9 7.2 7.8 1 2 3 0 0.0 000000 1006 0.0 0.0 1.6
17 3 SE 1 7 04 8.8 6.2 84 14.5 4.4 0.5 5.5 5.7 7.0 7.3 7.8 7.8 1 0 1 0 2.3 000000 1003 1.5 0.0 2.1
18 7 E 2 7 03 7.3 5.0 86 8.5 5.6 2.8 6.5 6.7 7.3 7.8 7.8 7.9 1 2 3 0 0.5 000000 992 1.0 0.0 0.5
19 3 SW 3 7 01 7.7 7.1 96 10.0 4.0 0.2 6.7 6.5 7.0 7.6 7.8 8.1 1 2 3 0 0.1 000002 1001 0.0 0.0 0.6
20 8 S 2 7 10 8.6 8.2 97 12.0 6.7 4.5 8.0 7.8 8.0 8.0 8.0 8.0 1 2 2 0 1.6 000000 1011 2.5 0.0 0.5
21 1 SW 2 6 10 9.5 9.1 97 13.8 7.3 4.8 8.0 7.8 8.2 8.4 8.2 8.1 1 2 2 0 0.2 000002 1017 0.0 0.0 1.0
22 7 SW 2 5 05 10.5 9.1 91 14.4 8.4 7.0 10.0 9.5 9.4 9.2 8.7 8.3 1 2 3 0 0.0 000000 1026 0.0 0.0 0.8
23 7 S 1 7 04 10.5 8.9 90 14.7 6.3 3.3 8.8 8.5 8.0 9.2 9.0 8.5 1 2 1 0 0.0 000000 1029 0.0 0.0 1.0
24 7 S 2 6 05 11.7 6.4 70 12.9 7.5 4.0 9.0 8.7 9.2 9.4 9.1 8.7 1 0 1 0 0.3 000000 1030 1.1 0.0 1.6
25 8 SW 2 5 10 8.1 6.4 89 10.3 7.0 6.2 8.5 8.7 9.0 9.3 9.2 8.8 1 2 3 0 1.1 000000 1029 1.3 0.0 0.7
26 1 NE 1 7 04 6.4 4.1 85 14.0 1.8 -1.0 5.7 5.9 7.8 8.8 9.0 8.9 1 1 4 0 0.0 000000 1034 0.0 0.0 1.5
27 1 S 2 7 04 9.0 3.7 69 13.2 2.8 -1.9 6.4 6.4 8.0 8.8 9.0 9.0 1 0 4 0 0.0 000000 1032 0.0 0.0 1.9
28 3 NE 1 7 04 8.2 4.6 78 14.1 2.4 -2.5 5.5 5.8 7.8 8.6 8.9 8.9 1 0 4 0 0.0 000000 1028 0.0 0.0 1.6
29 0 NE 1 5 04 9.0 2.9 66 16.0 3.0 -1.0 6.1 6.3 8.0 8.8 9.0 9.0 1 0 4 0 0.0 000000 1023 0.0 0.0 1.9
30 4 S 2 5 04 8.9 5.1 77 14.4 3.8 0.4 7.0 7.0 8.5 9.1 9.3 9.0 1 0 1 0 8.6 000000 1020 8.0 0.0 1.8
31 8 S 3 5 10 9.2 9.2 100 10.3 7.5 6.7 9.5 9.4 9.5 9.5 9.5 9.0 1 3 3 0 2.8 000000 1012 5.8 0.0 0.4
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Mean
5 7.4 5.2 86 11.2 4.3 1.9 6.3 6.4 7.2 7.7 7.9 8.1 1016
Total 39.0 45.0 3.8 37.9
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(.) Difference from 1991-2000 average used by the Weather Observers Network. Rainfall was 48% of average
Air temperatures Weather (No. days occurrence) and 46% of 1971-2000 ave.
Mean maximum 11.2 (+1.2) Sleet/snow falling 1 (-1.5) Most in a day: 8.6 mm on 30th.
Mean minimum 4.3 (+0.3) Snow lying (at 09GMT) 0 (-0.4) No. days with:
Mean 7.8 (+0.8) Hail <5 mm 3 [+0.1] >=0.2 mm 15 (- 2.4)
No. days <0.0C 1 (-1.0) Hail >=5 mm 0 [all hail] >=1.0 mm 10 (- 2.5)
Mean grass min 1.9 (-0.1) Thunder heard 0 (-0.4) >=5.0 mm 2 (- 3.4)
Lowest grass min -2.7 (+2.4) Gales 1 No. dry days 13 (+ 4.3)
No. days <0.0C 9 (-0.9) Fog (at 09GMT) 0
Mean soil 30cm 7.7 (+0.7) Lysimeter:
PE 23.2 mm
Highest maximum 16.0C (+1.1) on 29th. Lowest minimum -0.7 (+0.5) on 2nd. PWB 15.8 mm
Minimum relative humidity: 49% on 28th and 53% on 29th. PWS 21.1 mm
* A dry month with 39.0 mm ranking 15th driest March since 1928, but 2001 was drier with 35.0 mm. PWD -5.3 mm
* Mean maximum of 11.2C warmest since 1997 (11.6C) ranking 4th warmest in records since 1979.
* Winds (09 GMT) mainly S-W (21 days) compared with an E'ly component (9 days) & 1 calm. Piche: 37.9 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 code (01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze,
16 precipitation within sight, 17 thunderstorm no precip., 21 rain in past hour, 42 fog thinner in past hour,
50 slight drizzle, 60 intermittent sl. rain, 61 continuous sl. rain, 63 cont. moderate rain, 80 sl. rain shower,
81 mod. or heavy rain shower, 83 slight sleet shower, 86 moderate snow shower, 87 shower of ice pellets.
Temperatures (degC); RH relative humidity (%); soil temperatures are under bare soil and earth under grass (degC);
SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C, and grass Gr codes consult
'Recording Atmospheric Depositions on Grass' page.
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.
---------------------------------------------------------------------------------------------------------------------------
CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR APRIL 2002
---------------------------------------------------------------------------------------------------------------------------
-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 3 6 10 9.5 9.3 99 10.5 8.3 7.2 9.5 9.3 9.5 9.6 9.5 9.0 1 3 3 0 6.3 000000 1009 2.5 0.0 0.6
02 7 SE 1 8 03 7.7 5.2 84 13.5 3.4 0.2 6.8 6.6 7.8 8.8 9.3 9.1 1 1 1 0 1.3 000000 1009 2.2 0.0 1.6
03 8 SW 1 7 02 10.5 8.7 88 10.9 7.7 7.3 9.6 9.6 9.8 9.8 9.6 9.1 1 2 3 0 0.6 000000 1005 1.6 0.0 0.6
04 7 N 1 7 05 9.5 7.0 84 11.9 4.8 1.3 9.4 8.6 8.0 9.7 9.8 9.3 1 2 3 0 0.0 000000 1012 0.0 0.0 1.2
05 0 NE 1 6 04 10.1 4.3 67 15.3 6.5 2.5 8.7 8.3 8.1 10.0 10.0 9.5 1 0 1 0 0.0 000000 1006 0.0 0.0 1.3
06 2 E 4 6 04 6.8 2.4 74 14.5 5.4 3.4 7.3 7.7 9.1 10.0 10.0 9.6 1 0 1 0 0.0 000000 1018 0.0 0.0 3.0
07 0 NE 4 7 04 6.0 0.9 70 11.3 2.5 0.5 6.3 6.2 8.3 9.8 10.2 9.3 0 0 0 0 0.0 000000 1025 0.0 0.0 2.0
08 2 00 0 5 04 9.4 5.2 75 14.7 2.8 -0.5 8.0 7.0 8.5 9.7 10.0 9.8 0 0 4 0 0.0 000000 1025 0.0 0.0 1.4
09 4 NE 1 5 10 8.3 6.1 86 13.6 2.3 0.3 8.9 8.3 9.2 10.0 10.2 9.8 0 0 2 0 0.0 000002 1027 0.0 0.0 1.6
10 4 E 2 6 05 7.4 2.9 73 11.5 4.2 1.7 8.8 8.3 8.6 10.3 10.2 9.9 0 0 1 0 0.0 000000 1027 0.0 0.0 1.8
11 5 NE 1 6 04 7.1 2.0 70 10.6 1.6 -2.2 7.5 7.2 8.0 10.2 10.5 10.0 0 0 4 0 0.0 000000 1016 0.0 0.0 1.8
12 7 NE 2 5 05 7.5 5.5 87 10.5 5.0 3.8 8.9 9.0 9.8 10.2 10.3 10.2 0 0 1 0 0.0 000000 1012 0.0 0.0 1.5
13 4 N 1 8 03 7.2 3.2 76 10.7 1.5 -1.7 6.8 6.8 8.8 10.1 10.6 10.1 0 0 4 0 0.6 000000 1015 2.0 0.0 1.6
14 7 NW 1 6 60 7.5 6.0 90 8.5 4.1 0.6 9.5 9.2 9.8 10.2 10.4 10.1 1 3 3 0 1.0 000000 1013 3.9 0.0 0.9
15 3 SW 1 8 02 7.4 -0.6 57 12.4 1.0 -2.3 6.0 6.0 8.1 9.8 10.5 10.2 1 0 4 0 0.0 000000 1018 0.0 0.0 2.1
16 5 S 1 8 02 9.2 3.7 68 14.6 3.0 -0.6 7.4 6.8 8.2 9.5 10.1 10.1 0 0 4 0 0.0 000000 1016 0.0 0.0 3.2
17 7 S 4 8 05 11.2 4.6 64 14.5 7.5 2.9 9.9 9.0 9.5 10.0 10.1 10.1 0 0 0 0 10.8 000000 1012 9.5 0.0 1.6
18 8 W 3 5 63 5.7 5.7 100 9.4 4.9 4.4 8.2 8.8 9.8 10.1 10.2 10.0 1 3 3 0 5.1 000000 1011 4.6 0.0 0.3
19 6 S 1 5 01 9.4 7.5 88 15.8 4.2 1.0 9.3 8.3 8.8 9.8 10.1 10.1 1 1 3 0 1.6 000002 1021 5.0 0.0 1.9
20 7 S 4 7 25 10.5 6.7 77 13.0 7.2 3.1 11.0 10.7 10.8 10.9 10.5 10.0 1 2 3 0 3.1 000000 1025 5.2 0.0 2.8
21 7 S 6 7 05 12.2 6.6 68 15.4 9.7 8.3 10.5 10.5 10.8 11.0 10.8 10.1 1 1 3 0 5.4 000000 1027 7.0 0.0 2.5
22 8 SW 5 7 10 11.3 9.7 90 13.5 10.2 9.2 12.0 11.5 11.3 11.4 11.2 10.2 1 1 3 0 0.0 000000 1027 0.0 0.0 0.9
23 7 S 3 7 05 13.0 10.7 86 14.0 9.5 7.5 12.0 11.2 11.2 11.5 11.2 10.4 1 0 1 0 tr 000002 1031 0.0 0.0 0.9
24 8 S 2 7 02 10.9 10.1 95 15.5 7.2 5.8 11.2 10.7 11.0 11.4 11.4 10.5 1 0 1 0 0.4 000000 1028 0.4 0.0 1.3
25 7 W 1 7 05 9.3 7.6 89 14.1 5.0 2.2 10.8 10.2 11.0 11.8 11.5 10.7 1 1 1 0 12.0 000000 1026 4.3 0.0 2.2
26 8 NW 5 5 80 10.0 9.2 95 13.4 7.5 6.9 11.0 10.8 11.2 12.0 11.7 10.8 1 3 3 0 1.1 000000 1000 1.2 0.0 1.3
27 7 W 3 7 80 9.3 5.3 76 11.5 5.8 3.2 10.6 10.2 11.1 11.9 11.8 11.0 1 0 1 0 10.6 000000 1008 10.0 0.0 1.2
28 6 W 5 7 01 9.8 7.1 83 10.6 6.5 5.8 11.2 10.4 10.8 11.5 11.6 11.0 1 2 3 0 1.9 0040G0 989 3.3 0.0 1.5
29 7 NW 6 6 01 8.0 6.3 89 12.4 5.0 3.2 9.0 9.0 8.9 11.0 11.4 11.0 1 2 4 0 15.5 004000 993 9.1 0.0 1.0
30 8 SW 4 5 61 8.6 8.4 99 12.9 5.4 3.1 10.0 10.0 10.2 11.0 11.2 11.0 3 3 3 0 1.8 000000 988 1.2 0.0 1.8
---------------------------------------------------------------------------------------------------------------------------
Mean
6 9.0 5.9 82 12.7 5.3 2.9 9.2 8.9 9.5 10.4 10.5 10.1 1015
Total 79.1 73.0 0.0 47.4
---------------------------------------------------------------------------------------------------------------------------
(.) Difference from 1991-2000 average used by the Weather Observers Network. Rainfall was 105% of average
Air temperatures Weather (No. days occurrence) but 137% of 1971-2000 ave.
Mean maximum 12.7 (+0.5) Sleet/snow falling 0 (-2.1) Most in a day: 15.5 mm on 29th.
Mean minimum 5.3 (+0.2) Snow lying (at 09 GMT) 0 (-0.2) No. days with:
Mean 9.0 (+0.4) Hail <5 mm 2 [-1.2] >=0.2 mm 17 (- 0.3)
No. days <0.0C 0 (-0.6) Hail >=5 mm 0 [all hail] >=1.0 mm 14 (+ 0.2)
Mean grass min 2.9 (-0.1) Thunder heard 0 (-0.2) >=5.0 mm 7 (+ 1.5)
Lowest grass min -2.3 (+0.8) Gales 1 No. dry days 12 (+ 3.4)
No. days <0.0C 5 (-1.1) Fog (at 09GMT) 0
Mean soil 30cm 10.4 (+1.2) Lysimeter:
PE 30.6 mm
Highest maximum 15.8C (-1.8) on 19th. Lowest minimum 1.0 (+0.7) on 15th. PWB 48.2 mm
Minimum relative humidity: 46% on 6th. PWS 60.0 mm
* Not so wet as 2001 that had 103.8 mm but ranked 21st wettest April on record since 1928. PWD -11.8 mm
* Highest maximum 15.8C continued trend of low values. Only 2001 with 15.3C lower since 1979.
* But the mean minimum 5.3C ranked 6th warmest and the highest minimum 10.2C ranked Piche: 47.4 ml
* 4th warmest. The lowest minimum of 1.0C was ranked 3rd warmest again since 1979.
---------------------------------------------------------------------------------------------------------------------------
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 code (01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze,
16 precipitation within sight, 17 thunderstorm no precip., 25 rain shower in past hour, 42 fog thinner in past hour,
50 slight drizzle, 60 intermittent sl. rain, 61 continuous sl. rain, 63 cont. moderate rain, 80 sl. rain shower,
81 mod. or heavy rain shower, 83 slight sleet shower, 86 moderate snow shower, 87 shower of ice pellets.
Temperatures (degC); RH relative humidity (%); soil temperatures are under bare soil and earth under grass (degC);
SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C, and grass Gr codes consult
'Recording Atmospheric Depositions on Grass' page.
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.
---------------------------------------------------------------------------------------------------------------------------
CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR MAY 2002
---------------------------------------------------------------------------------------------------------------------------
-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 W 5 7 O3 8.5 5.9 84 10.6 4.5 1.8 9.9 9.4 10.2 11.2 11.2 11.0 1 1 3 0 1.5 000000 996 3.6 0.0 0.9
02 6 N 2 8 03 8.8 6.4 85 12.6 6.3 3.7 8.8 9.2 10.2 11.0 11.2 11.0 1 1 1 0 0.0 000000 1010 0.0 0.0 1.6
03 6 N 3 7 03 9.6 6.4 80 12.0 3.1 -0.8 11.2 9.8 10.4 11.4 11.5 11.0 1 0 4 0 0.0 000000 1019 0.0 0.0 1.8
04 1 S 1 8 03 10.5 4.2 65 13.6 2.9 -0.2 9.2 8.9 10.6 11.7 11.6 11.1 0 0 4 0 0.0 000000 1023 0.0 0.0 1.7
05 2 NE 2 7 05 10.6 7.3 80 13.2 5.3 3.8 12.9 11.0 11.5 12.2 11.9 11.2 0 0 1 0 tr 000000 1028 0.0 0.0 2.0
06 8 NE 2 7 05 8.7 6.5 86 13.0 6.5 5.2 10.6 11.2 12.1 12.8 12.5 11.3 0 1 3 0 0.0 000000 1028 0.0 0.0 1.3
07 8 NE 2 5 05 10.5 9.1 91 13.5 7.1 5.4 12.0 11.3 12.0 12.9 12.5 11.5 0 0 1 0 0.0 000000 1025 0.0 0.0 0.9
08 8 NE 1 5 05 12.2 10.3 88 14.6 7.7 4.9 14.1 12.5 12.2 13.1 12.7 11.8 0 0 1 0 0.0 000000 1022 0.0 0.0 1.5
09 6 E 2 5 05 11.2 8.8 85 14.6 8.8 6.8 13.6 12.8 13.0 13.6 12.8 11.8 0 0 1 0 0.0 000000 1017 0.0 0.0 1.3
10 7 N 1 5 05 12.6 10.5 87 17.5 8.8 6.7 15.0 13.8 13.7 14.0 13.3 12.0 0 0 1 0 0.0 000000 1012 0.0 0.0 1.3
11 6 N 2 7 01 9.8 6.8 82 12.6 8.3 6.6 14.3 13.3 13.8 14.2 13.6 12.2 0 0 1 0 0.0 000000 1015 0.0 0.0 1.9
12 1 E 1 8 03 12.0 6.8 70 14.8 4.4 1.6 10.8 12.0 13.1 14.2 13.8 12.3 0 0 1 0 tr 000000 1013 0.0 0.0 2.2
13 8 SE 3 7 25 14.0 10.2 78 16.3 9.8 8.8 14.3 13.9 14.1 14.2 13.8 12.5 0 1 3 0 3.3 000000 1000 4.5 0.0 1.9
14 7 SW 5 6 01 11.3 8.5 83 14.4 9.8 8.4 12.9 12.2 13.0 13.7 13.8 12.8 1 0 3 0 0.5 000000 1002 3.1 0.0 2.0
15 8 S 5 6 50 11.7 11.5 99 19.0 10.1 9.3 12.8 12.8 13.0 13.6 13.5 12.6 1 3 3 0 tr 000000 1018 0.0 0.0 2.6
16 3 SE 1 8 01 19.0 12.8 67 24.7 9.9 6.6 15.2 14.0 13.0 13.8 13.5 12.6 0 0 1 0 0.0 000000 1018 0.0 0.0 3.9
17 8 NE 2 7 05 19.0 17.4 90 21.3 17.0 13.9 18.5 16.8 15.7 15.1 14.0 12.5 0 0 0 0 9.2 000000 1009 10.0 0.0 1.5
18 8 SW 1 5 10 12.0 12.0 100 16.0 10.9 10.5 14.0 14.2 14.5 14.8 14.0 12.8 1 3 3 0 4.0 000000 1010 4.3 0.0 1.2
19 7 S 4 6 01 12.8 10.9 88 15.0 10.2 9.5 13.3 13.3 14.0 14.4 14.1 13.0 1 0 3 0 6.0 000000 1012 8.2 0.0 1.3
20 8 S 3 6 25 14.0 12.2 89 17.3 11.8 11.5 13.5 13.5 13.7 14.1 13.8 12.9 1 3 3 0 1.3 0000G0 1002 2.5 0.0 2.4
21 7 S 3 7 03 12.8 9.3 79 14.7 8.4 6.8 13.5 12.3 13.0 14.0 13.8 13.0 1 0 1 0 3.9 000000 997 6.2 0.0 2.7
22 7 S 5 7 02 13.5 7.4 67 15.8 10.7 9.4 12.5 12.5 13.0 13.6 13.6 13.0 1 0 3 0 0.8 0000G0 983 1.6 0.0 2.6
23 8 S 5 7 02 11.1 8.9 86 15.3 10.4 9.4 12.5 12.8 13.0 13.8 13.6 13.0 1 1 3 0 3.2 000000 997 3.8 0.0 2.6
24 8 S 8 6 25 11.1 8.0 81 12.6 9.2 8.0 12.2 12.1 12.9 13.8 13.8 12.9 1 2 3 0 2.3 0000G0 988 4.5 0.0 2.3
25 6 SW 6 7 05 10.7 6.7 76 13.6 8.4 7.5 11.9 11.5 12.0 13.0 13.2 12.9 1 0 3 0 3.2 000000 1000 4.0 0.0 1.5
26 6 S 1 7 05 11.9 6.7 70 13.1 5.9 2.8 13.2 11.4 11.8 13.0 13.2 13.0 1 1 1 0 4.4 004000 997 3.2 0.0 0.7
27 6 NW 2 7 05 13.0 10.1 83 16.6 7.7 5.2 14.3 12.7 12.7 13.3 13.1 12.8 1 1 3 0 1.6 000000 999 3.1 0.0 1.5
28 7 SE 2 6 01 10.4 8.1 86 14.5 8.8 6.7 12.5 12.5 13.0 13.8 13.5 12.8 1 2 3 0 2.5 000000 996 2.4 0.0 1.3
29 7 W 5 7 25 10.0 7.9 87 14.6 9.0 8.4 12.2 12.4 13.0 13.8 13.6 12.9 1 2 3 0 13.5 000000 1006 5.2 0.0 1.5
30 7 SW 5 5 10 11.2 10.4 95 15.6 8.8 7.6 12.8 12.8 13.1 13.8 13.6 12.9 1 2 3 0 0.0 000000 1014 0.0 0.0 1.2
31 5 SW 2 7 03 12.3 7.4 72 17.3 6.6 4.1 14.0 12.4 13.0 14.0 13.8 13.0 1 0 1 0 0.0 000000 1025 0.0 0.0 2.2
---------------------------------------------------------------------------------------------------------------------------
Mean
6 11.8 8.9 83 15.2 8.3 6.4 12.9 12.3 12.7 13.4 13.2 12.3 1009
Total 61.2 70.2 0.0 55.3
---------------------------------------------------------------------------------------------------------------------------
(.) Difference from 1991-2000 average used by the Weather Observers Network. Rainfall was 90% of average
Air temperatures Weather (No. days occurrence) but 106% of 1971-2000 ave.
Mean maximum 15.2 (-0.5) Sleet/snow falling 0 ( 0.0) Most in a day: 13.5 mm on 29th.
Mean minimum 8.3 (+0.6) Snow lying (at 09GMT) 0 (-0.1) No. days with:
Mean 11.8 (+0.1) Hail <5 mm 1 [-0.4] >=0.2 mm 16 (+ 2.5)
No. days <0.0C 0 ( 0.0) Hail >=5 mm 0 [all hail] >=1.0 mm 14 (+ 4.1)
Mean grass min 6.4 (+0.4) Thunder heard 0 (-1.1) >=5.0 mm 3 (- 1.6)
Lowest grass min -0.8 (-0.8) Gales 3 No. dry days 12 (- 1.4)
No. days <0.0C 2 (+1.0) Fog (at 09GMT) 0
Mean soil 30cm 13.4 (+0.1) Lysimeter:
PE 50.3 mm
Highest maximum 24.7C (+1.6) on 16th. Lowest minimum 2.9 (-0.1) on 4th. PWB 10.9 mm
Minimum relative humidity: 52% on 16th. PWS 33.2 mm
* While mean 11.8C was near average the mean minimum 8.3C was ranked 5th warmest on record. PWD 22.2 mm
* The mean maximum 15.2C however was coolest since 1996 and ranked 8th coolest.
* The minimum 17.0C and mean 19.1C on the 17th were the warmest in May on record. Piche: 55.3 ml
* Rainfall 61.2 mm was the wettest May since 1999. Recent wet Mays reflected in different average values.
---------------------------------------------------------------------------------------------------------------------------
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 code (01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze,
16 precipitation within sight, 17 thunderstorm no precip., 21 rain in past hour, 42 fog thinner in past hour,
50 slight drizzle, 60 intermittent sl. rain, 61 continuous sl. rain, 63 cont. moderate rain, 80 sl. rain shower,
81 mod. or heavy rain shower, 83 slight sleet shower, 86 moderate snow shower, 87 shower of ice pellets.
Temperatures (degC); RH relative humidity (%); soil temperatures are under bare soil and earth under grass (degC);
SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C, and grass Gr codes consult
'Recording Atmospheric Depositions on Grass' page.
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.
---------------------------------------------------------------------------------------------------------------------------
CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR JUNE 2002
---------------------------------------------------------------------------------------------------------------------------
-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 4 SE 1 8 02 17.3 10.0 62 22.6 8.0 5.8 16.6 14.0 14.0 14.6 14.0 13.0 0 0 1 0 1.6 000000 1024 2.3 0.0 2.3
02 8 00 0 7 29 13.6 12.1 97 20.3 12.8 10.8 15.0 15.3 15.8 15.8 14.8 13.2 1 1 3 3 7.6 000T00 1014 6.8 0.0 0.7
03 8 SW 1 5 10 9.7 9.7 100 15.8 9.7 9.8 13.5 13.8 14.8 15.1 14.8 13.5 1 3 3 0 0.3 000000 1008 0.5 0.0 1.6
04 3 SW 5 7 03 12.5 8.5 77 15.5 9.2 7.5 15.2 13.8 14.1 15.0 14.8 13.5 1 0 3 0 0.0 000000 1003 0.0 0.0 2.0
05 2 N 2 7 03 12.5 10.0 85 16.0 7.3 4.0 14.5 13.0 13.8 14.9 14.8 13.8 0 0 1 0 4.7 000000 1003 5.0 0.0 1.0
06 8 N 1 4 10 12.2 12.2 100 19.5 11.3 11.0 14.4 14.8 15.1 15.5 15.0 13.8 1 2 3 0 0.1 000000 1003 0.0 0.0 1.0
07 8 E 2 7 05 14.7 13.3 91 15.5 12.2 12.5 16.1 16.0 16.0 16.2 15.2 13.8 1 0 3 0 1.3 000000 1000 1.0 0.0 0.4
08 7 00 0 7 05 14.5 12.1 86 15.7 11.1 10.8 17.0 15.4 15.0 15.5 15.0 14.0 1 0 3 0 1.5 000000 1004 2.5 0.0 0.8
09 7 S 5 6 25 11.8 10.7 87 15.5 10.1 9.2 13.4 13.8 14.8 15.3 15.0 14.0 1 3 3 0 8.8 000000 998 7.0 0.0 1.6
10 8 SW 6 5 80 10.7 9.9 95 14.3 9.3 7.8 13.8 13.7 14.2 15.0 15.1 14.0 1 3 3 0 2.4 000000 1000 3.0 0.0 1.5
11 7 SW 4 7 05 11.5 8.5 82 15.9 8.3 5.9 13.2 12.8 13.5 14.8 14.8 14.0 1 0 3 0 0.0 000000 1009 0.0 0.0 2.2
12 6 SW 2 8 03 12.0 10.1 88 15.8 8.0 6.2 13.4 13.0 13.9 15.0 14.8 14.0 1 0 1 0 0.3 000000 1011 0.8 0.0 2.5
13 8 W 3 7 05 12.6 9.9 84 15.3 10.1 9.2 15.1 14.5 14.7 15.3 15.0 14.0 1 0 3 0 5.1 000000 1012 10.5 0.0 1.1
14 8 S 3 6 50 15.3 14.3 93 15.7 10.3 10.0 15.5 15.0 14.8 15.2 15.0 14.0 1 3 3 0 16.7 000000 1009 6.5 0.0 0.3
15 7 SW 4 5 01 13.1 11.8 92 16.2 11.8 11.5 14.8 14.3 14.6 15.0 14.9 14.0 1 0 3 0 0.1 000000 1010 0.0 0.0 2.0
16 6 S 5 7 01 14.8 11.1 78 18.0 11.8 11.5 16.2 15.3 15.0 15.4 15.0 14.0 1 1 3 0 3.2 0000G0 1012 2.8 0.0 1.9
17 6 S 6 7 05 15.6 12.3 81 17.8 13.8 12.9 16.8 15.5 15.7 15.6 15.0 14.2 1 0 3 0 0.0 000000 1010 0.0 0.0 2.9
18 6 S 5 6 05 14.5 11.9 83 16.7 12.3 11.0 15.8 15.0 15.2 15.8 15.4 14.2 0 0 0 0 0.0 000000 1013 0.0 0.0 2.7
19 6 SW 4 7 05 14.5 10.3 76 18.5 10.7 9.8 17.4 15.7 15.2 15.8 15.5 14.5 0 0 0 0 0.0 000000 1021 0.0 0.0 2.4
20 7 S 3 7 05 14.2 10.0 76 18.5 8.8 6.7 15.6 14.8 15.5 16.2 15.8 14.5 0 0 1 0 2.0 000000 1021 2.4 0.0 2.2
21 8 S 2 7 50 12.2 11.1 93 15.2 10.6 9.0 15.2 15.2 15.8 16.3 16.0 14.5 1 3 3 0 0.3 000000 1017 0.3 0.0 1.1
22 8 SW 4 7 02 13.3 11.0 86 17.5 12.1 11.0 15.1 15.0 15.2 15.9 15.8 14.6 1 0 3 0 0.2 000000 1016 0.2 0.0 2.1
23 6 W 3 7 01 13.5 9.8 78 17.8 10.4 8.5 16.8 15.2 15.3 16.2 15.8 14.8 0 0 3 0 0.0 000000 1021 0.0 0.0 1.6
24 7 S 3 7 05 13.9 11.3 84 16.2 9.8 7.0 16.0 15.3 15.5 16.1 15.8 14.8 0 0 1 0 0.0 000000 1027 0.0 0.0 1.6
25 7 W 2 7 01 13.5 9.6 77 17.8 11.0 9.8 16.2 15.5 15.8 16.2 15.8 14.8 0 0 1 0 0.0 000000 1029 0.0 0.0 1.9
26 8 W 2 7 05 14.5 10.7 78 15.5 10.0 8.2 17.0 15.8 16.0 16.5 16.1 14.9 0 0 1 0 1.2 000000 1025 0.7 0.0 0.9
27 7 NW 3 7 05 12.2 9.9 86 16.3 7.5 4.5 14.8 14.3 14.8 15.6 15.7 15.0 1 0 3 0 tr 000000 1022 0.0 0.0 1.8
28 7 N 3 7 05 12.8 8.2 73 17.3 9.7 7.8 15.8 14.4 14.8 15.6 15.6 14.9 0 0 0 0 0.0 000000 1025 0.0 0.0 1.4
29 7 W 3 7 05 13.0 9.1 77 14.8 8.6 5.4 16.0 15.2 15.2 15.8 15.5 14.8 0 0 0 0 0.7 000000 1024 0.6 0.0 0.8
30 8 SW 2 6 10 13.3 12.8 96 13.3 11.2 8.1 15.5 15.2 15.4 15.8 15.7 14.8 1 2 3 0 10.7 000000 1016 8.3 0.0 0.4
---------------------------------------------------------------------------------------------------------------------------
Mean
7 13.3 10.7 85 16.7 10.3 8.8 15.4 14.7 15.0 15.6 15.3 14.2 1014
Total 68.8 61.2 0.0 46.7
---------------------------------------------------------------------------------------------------------------------------
(.) Difference from 1991-2000 average used by the Weather Observers Network. Rainfall was 95% of average
Air temperatures Weather (No. days occurrence) and 104% of 1971-2000 ave.
Mean maximum 16.7 (-0.7) Sleet/snow falling 0 ( 0.0) Most in a day: 16.7 mm on 14th.
Mean minimum 10.3 (+0.3) Snow lying (at 09GMT) 0 ( 0.0) No. days with:
Mean 13.5 (-0.2) Hail <5 mm 0 [-0.2] >=0.2 mm 18 (+ 3.6)
No. days <0.0C 0 ( 0.0) Hail >=5 mm 0 [all hail] >=1.0 mm 13 (+ 3.3)
Mean grass min 8.8 (+0.4) Thunder heard 1 ( 0.0) >=5.0 mm 5 (+ 0.7)
Lowest grass min 4.0 (+0.9) Gales 1 No. dry days 9 (- 3.5)
No. days <0.0C 0 ( 0.0) Fog (at 09GMT) 0
Mean soil 30cm 15.6 ( 0.0) Lysimeter:
PE 61.1 mm
Highest maximum 22.6C (-3.3) on 1st. Lowest minimum 7.3 (+1.7) on 5th. PWB 7.7 mm
Minimum relative humidity: 54% on 1st. PWS 38.2 mm
* Near ave rainfall was wettest June since 1999 (101.3 mm), 1998 (182.9 mm) and 1997 (109.4 mm). PWD -30.5 mm
* Mean max 16.7C lowest since 16.5C in 1998. Mean min 10.3C lowest since 10.6C in 2000.
* Lo min 7.3C warmest since 7.5C in 1992 and ranked 2nd highest. Piche: 46.7 ml
* Lo mean 11.7C on 5th and 29th ranked 3rd warmest to 12.0C in 1993 and 1988.
---------------------------------------------------------------------------------------------------------------------------
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 code (01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze,
16 precipitation within sight, 29 recent thunderstorm, 21 rain in past hour, 42 fog thinner in past hour,
50 slight drizzle, 60 intermittent sl. rain, 61 continuous sl. rain, 63 cont. moderate rain, 80 sl. rain shower,
81 mod. or heavy rain shower, 83 slight sleet shower, 86 moderate snow shower, 87 shower of ice pellets.
Temperatures (degC); RH relative humidity (%); soil temperatures are under bare soil and earth under grass (degC);
SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C, and grass Gr codes consult
'Recording Atmospheric Depositions on Grass' page.
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.
---------------------------------------------------------------------------------------------------------------------------
CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR JULY 2002
---------------------------------------------------------------------------------------------------------------------------
-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 2 5 61 10.3 9.3 94 14.2 9.8 9.4 13.0 13.3 14.2 15.1 15.3 14.4 1 3 3 0 6.2 000000 997 7.0 0.0 0.9
02 7 W 4 7 25 13.2 10.9 86 15.3 9.6 8.0 14.3 13.5 14.0 15.0 15.2 14.8 1 2 3 0 1.1 000000 996 2.3 0.0 1.3
03 6 NW 2 7 01 14.3 10.9 80 18.6 9.0 7.5 16.0 14.0 14.0 15.0 15.0 14.8 1 1 3 0 tr 000000 997 0.0 0.0 1.2
04 7 W 2 7 05 13.6 9.3 75 15.1 10.0 7.8 15.6 15.0 15.2 15.6 15.3 14.5 1 0 0 0 13.8 000000 1016 13.0 0.0 1.2
05 7 NE 3 6 21 12.6 12.2 98 16.5 10.9 10.5 15.1 14.7 14.9 15.3 15.2 14.5 1 2 3 0 0.0 000000 1006 0.0 0.0 1.4
06 7 S 2 7 05 15.5 11.8 79 18.4 8.5 6.0 16.2 14.5 14.6 15.5 15.4 14.6 1 0 1 0 0.0 000000 1015 0.0 0.0 1.7
07 6 SW 1 7 01 15.1 8.6 65 19.0 11.5 10.3 17.7 15.9 15.5 15.8 15.3 14.8 1 0 1 0 4.7 000000 1014 7.5 0.0 1.8
08 7 SW 3 7 01 13.0 11.7 85 16.3 12.0 11.7 16.2 15.8 16.0 16.5 15.8 14.8 1 1 3 0 0.0 000000 1005 0.0 0.0 2.0
09 7 S 1 7 02 14.0 10.8 81 17.7 10.3 8.2 15.8 15.3 15.6 16.3 16.1 14.8 1 0 1 0 tr 000000 1004 0.0 0.0 1.8
10 2 SW 4 8 01 14.7 9.7 72 18.6 10.4 8.5 15.8 14.2 15.0 16.2 16.0 14.8 0 0 1 0 0.8 000000 1006 0.8 0.0 2.0
11 6 NW 1 6 80 13.5 11.3 86 18.8 10.6 7.2 16.2 15.8 16.1 16.7 16.2 15.0 1 3 3 0 1.5 000000 1013 0.3 0.0 1.3
12 5 SW 2 7 05 14.4 10.4 77 19.0 10.0 7.9 16.6 15.2 15.6 16.6 16.3 15.0 1 0 1 0 tr 000000 1018 0.0 0.0 1.8
13 6 00 0 7 05 15.7 11.7 77 17.7 9.5 5.2 17.4 15.2 15.6 16.5 16.3 15.0 0 0 1 0 0.0 000000 1022 0.0 0.0 1.2
14 7 SE 2 7 04 17.7 13.1 74 22.4 10.6 5.8 19.2 16.7 16.5 17.0 16.5 15.1 0 0 1 0 0.0 000001 1028 0.0 0.0 1.6
15 7 SW 2 7 04 18.0 14.0 78 23.0 12.7 10.8 19.0 17.8 17.6 17.8 16.8 15.2 0 0 2 0 tr 000000 1028 0.0 0.0 1.3
16 7 NE 1 7 05 15.0 12.7 86 17.5 12.2 11.0 18.2 17.7 17.8 17.8 17.0 15.3 0 0 1 0 0.0 000000 1024 0.0 0.0 1.2
17 8 NE 1 7 05 14.0 12.0 88 16.5 10.5 8.2 18.0 17.6 18.0 17.9 17.2 15.5 0 0 1 0 0.0 000000 1024 0.0 0.0 1.3
18 6 NE 1 7 04 15.2 13.2 88 18.7 8.3 6.0 17.5 15.7 16.4 17.4 17.1 15.8 0 0 1 0 tr 000000 1023 0.0 0.0 0.9
19 8 SW 1 5 80 15.6 12.1 89 15.8 13.9 12.9 18.0 17.8 18.0 18.0 17.2 15.8 0 1 3 0 7.8 000000 1019 7.2 0.0 0.4
20 7 NW 1 7 05 13.2 11.9 92 15.3 11.1 10.5 16.7 16.3 16.5 17.5 17.1 16.0 1 1 3 0 2.5 000000 1017 0.3 0.0 0.8
21 6 N 2 7 05 14.5 12.3 87 19.0 10.3 7.6 15.8 15.1 16.0 17.1 17.0 15.8 1 0 3 0 0.1 000000 1021 0.0 0.0 1.4
22 7 SW 3 5 02 13.8 12.5 92 15.9 10.8 7.5 16.2 16.0 16.5 17.6 17.0 16.0 1 1 3 0 4.7 000000 1019 2.2 0.0 0.8
23 7 SW 4 5 02 15.6 15.4 99 16.9 13.8 13.6 17.3 16.6 16.5 17.2 17.0 16.0 1 1 3 0 0.4 000000 1008 0.6 0.0 0.7
24 7 NW 1 6 02 13.8 11.0 83 16.0 9.8 5.2 15.6 15.3 15.9 17.1 17.0 16.0 1 0 1 0 0.0 000000 1018 0.0 0.0 1.1
25 7 S 4 7 02 16.0 14.1 88 19.0 12.0 10.2 16.0 15.5 15.7 16.7 16.5 15.8 1 0 0 0 0.0 000000 1014 0.0 0.0 1.1
26 8 SW 1 7 05 16.0 13.3 84 20.1 13.6 11.8 17.5 16.6 16.3 16.9 16.6 15.7 1 0 1 0 0.0 000000 1015 0.0 0.0 1.5
27 2 S 2 7 05 17.7 13.3 75 20.1 12.5 10.6 17.4 16.0 16.5 17.1 17.0 15.6 0 0 1 0 0.0 000000 1016 0.0 0.0 1.9
28 6 S 4 7 02 17.8 12.8 73 22.0 14.3 13.9 18.5 17.0 17.2 17.5 17.0 15.5 0 0 0 0 tr 000000 1016 0.0 0.0 2.3
29 8 00 0 6 05 18.2 17.1 93 21.6 16.6 15.4 19.3 19.0 18.5 18.0 17.2 15.8 0 0 3 0 4.1 000000 1019 1.6 0.0 0.6
30 8 SW 1 5 51 16.6 16.4 99 16.6 15.5 13.2 19.0 18.7 18.5 18.3 17.5 15.8 1 3 3 0 6.3 000002 1015 7.8 0.0 0.1
31 8 00 0 4 51 14.0 14.0 100 15.9 13.4 13.2 16.1 16.5 17.0 17.5 17.3 16.0 1 3 3 0 3.5 000001 1011 6.1 0.0 0.0
---------------------------------------------------------------------------------------------------------------------------
Mean
7 14.9 12.3 85 18.0 11.4 9.5 16.8 15.9 16.2 16.8 16.4 15.3 1014
Total 57.5 56.7 0.0 38.6
---------------------------------------------------------------------------------------------------------------------------
(.) Difference from 1991-2000 average used by the Weather Observers Network. Rainfall was 94% of average
Air temperatures Weather (No. days occurrence) but only 77% of 1928-2001 ave.
Mean maximum 18.0 (-1.2) Sleet/snow falling 0 ( 0.0) Most in a day: 13.8 mm on 4th.
Mean minimum 11.4 (-0.6) Snow lying (at 09GMT) 0 ( 0.0) No. days with:
Mean 14.7 (-0.9) Hail <5 mm 0 [- 0.10] >=0.2 mm 13 (- 2.0)
No. days <0.0C 0 ( 0.0) Hail >=5 mm 0 [all hail] >=1.0 mm 11 (- 0.9)
Mean grass min 9.5 (-0.9) Thunder heard 0 (-0.6) >=5.0 mm 4 (- 0.2)
Lowest grass min 5.2 (-0.4) Gales 0 No. dry days 11 (- 0.5)
No. days <0.0C 0 ( 0.0) Fog (at 09GMT) 0
Mean soil 30cm 16.8 (-0.5) Lysimeter:
PE 47.8 mm
Highest maximum 23.0C (-1.8) on 15th. Lowest minimum 8.3 (+0.4) on 18th. PWB 9.7 mm
Minimum relative humidity: 61% on 21st. PWS 37.0 mm
* Mean 14.7C & mean max 18.0C both coolest since 1998 and ranked 7th coolest on 24y records. PWD -27.3 mm
* Mean minimum 11.4C coolest since 1993 (10.9C) and ranked 7th overall (14.1C in 1988).
* Highest min 16.6C was, however, the 6th warmest (17.6C in 1995). Piche: 38.6 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 code (01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze,
16 precipitation within sight, 17 thunderstorm no precip., 21 rain in past hour, 42 fog thinner in past hour,
50 slight drizzle, 60 intermittent sl. rain, 61 continuous sl. rain, 63 cont. moderate rain, 80 sl. rain shower,
81 mod. or heavy rain shower, 83 slight sleet shower, 86 moderate snow shower, 87 shower of ice pellets.
Temperatures (degC); RH relative humidity (%); soil temperatures are under bare soil and earth under grass (degC);
SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C, and grass Gr codes consult
'Recording Atmospheric Depositions on Grass' page.
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.
---------------------------------------------------------------------------------------------------------------------------
CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR AUGUST 2002
---------------------------------------------------------------------------------------------------------------------------
-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 9 E 1 4 43 15.9 15.9 100 16.7 12.4 10.2 16.8 16.3 16.5 17.0 17.0 16.1 1 1 2 0 36.5 000001 1011 20.0 0.0 0.1
02 8 SW 1 6 63 12.5 12.4 99 16.0 12.5 12.5 15.3 15.7 16.2 16.8 16.9 16.0 1 3 3 0 1.4 000000 1011 2.3 0.0 0.2
03 6 SE 1 7 10 16.0 15.8 99 21.2 11.5 7.6 16.7 15.2 15.6 16.5 16.5 16.0 1 1 2 0 0.1 000001 1014 0.0 0.0 0.7
04 9 NE 2 4 42 14.0 14.0 100 20.0 11.4 11.2 17.4 17.0 17.1 17.5 17.0 16.0 1 0 2 0 tr 000001 1014 0.0 0.0 0.9
05 1 NE 2 7 04 18.1 14.9 81 20.8 13.8 11.2 19.0 17.0 17.5 18.0 17.4 15.9 1 0 1 0 0.0 000000 1016 0.0 0.0 1.4
06 5 00 0 7 04 18.8 14.9 78 21.5 12.1 10.1 18.3 17.4 18.0 18.5 17.8 16.1 0 0 1 0 0.1 000000 1019 0.0 0.0 1.2
07 8 00 0 4 80 17.5 16.8 96 18.5 15.7 14.6 18.6 18.4 18.5 18.5 17.8 16.1 1 3 3 0 1.4 000000 1019 0.8 0.0 0.5
08 8 00 0 7 02 14.0 11.4 84 15.6 12.2 11.8 17.2 17.0 17.5 18.3 17.8 16.5 1 0 1 0 7.4 000000 1013 14.8 0.0 0.6
09 8 N 2 4 60 13.0 12.6 98 14.2 11.8 11.8 15.0 15.2 16.5 17.6 17.5 16.5 1 3 3 0 0.8 000000 1005 2.0 0.0 0.4
10 7 N 3 7 05 14.0 12.4 90 17.3 12.6 12.4 16.0 15.7 16.1 17.0 17.1 16.5 1 3 3 0 tr 000000 1008 0.0 0.0 1.0
11 7 S 4 7 01 14.7 12.3 86 18.5 11.3 8.4 16.2 16.0 16.8 17.5 17.2 16.4 1 0 3 0 0.9 000000 1004 2.5 0.0 0.9
12 6 N 1 7 01 15.2 12.9 86 19.7 10.5 7.1 17.0 16.5 17.0 17.7 17.2 16.3 1 1 3 0 tr 000000 1016 0.0 0.0 1.7
13 8 SW 4 7 20 17.0 15.6 92 18.0 14.5 13.3 17.4 17.2 17.5 17.9 17.5 16.3 0 0 3 0 1.5 000000 1017 5.5 0.0 0.7
14 7 S 4 5 01 16.2 15.0 93 19.0 15.4 15.1 17.8 17.3 17.2 17.6 17.5 16.4 1 2 3 0 1.1 000000 1017 1.3 0.0 1.5
15 7 SW 3 6 10 14.3 13.8 97 19.9 13.9 13.5 16.0 16.3 17.0 17.6 17.5 16.5 1 2 3 0 0.0 000000 1014 0.0 0.0 1.7
16 5 00 0 7 05 15.7 11.7 77 21.2 10.0 7.1 14.5 14.6 16.2 17.5 17.5 16.5 0 0 1 0 0.0 000000 1019 0.0 0.0 2.0
17 6 SE 4 7 05 20.6 15.4 72 23.0 12.5 10.1 18.2 17.3 17.5 18.0 17.6 16.3 0 0 0 0 25.3 000000 1010 11.5 0.0 1.7
18 8 00 0 5 63 13.4 13.4 100 15.2 13.2 13.2 16.5 16.8 17.5 17.9 17.5 16.5 1 3 3 0 6.2 000000 1010 5.7 0.0 0.6
19 1 00 0 7 05 14.5 12.9 90 17.6 10.1 6.8 14.9 14.5 16.0 17.5 17.5 16.6 1 0 1 0 tr 000000 1013 0.0 0.0 0.7
20 7 00 0 7 10 14.5 13.8 96 19.5 11.5 8.8 16.0 15.7 16.5 17.4 17.3 16.5 1 1 3 0 0.0 000000 1016 0.0 0.0 1.5
21 2 NE 1 8 02 15.3 12.2 82 19.5 9.8 6.0 14.4 14.4 15.8 17.2 17.2 16.5 1 0 1 0 0.0 000000 1020 0.0 0.0 1.4
22 6 SE 1 7 05 15.5 13.2 86 20.5 10.6 6.6 16.2 15.8 16.3 17.3 17.2 16.3 0 0 1 0 2.7 000000 1021 0.3 0.0 0.9
23 6 N 1 5 04 15.3 14.3 93 19.9 12.2 8.6 16.6 16.3 16.8 17.3 17.2 16.4 1 0 3 0 2.8 004000 1020 2.0 0.0 0.8
24 8 SW 1 5 10 15.2 15.0 99 15.8 13.6 11.1 17.0 16.9 17.1 17.8 17.5 16.5 1 2 3 0 5.2 000000 1021 1.7 0.0 0.4
25 8 00 0 7 10 14.5 14.0 97 20.6 10.7 6.8 16.0 15.5 16.1 17.2 17.5 16.5 1 1 1 0 0.0 000000 1027 0.0 0.0 1.4
26 3 NE 1 7 05 15.5 13.6 88 18.3 11.0 6.7 15.7 15.2 16.5 17.2 17.4 16.5 1 0 1 0 0.0 000000 1016 0.0 0.0 0.8
27 5 N 1 7 05 14.8 13.6 92 21.2 9.3 7.8 15.6 15.4 16.2 17.1 17.2 16.3 1 0 1 0 0.2 000000 1016 0.0 0.0 0.9
28 8 S 1 4 10 16.8 16.7 99 19.0 14.2 11.8 17.9 17.6 17.6 17.7 17.3 16.4 1 2 3 0 4.5 000001 1019 5.6 0.0 0.6
29 8 SW 1 4 10 16.0 16.0 100 18.4 15.5 15.2 17.2 17.3 17.6 17.8 17.3 16.6 1 3 3 0 1.9 000001 1015 1.4 0.0 0.8
30 8 SW 5 7 10 17.0 16.3 96 17.2 13.7 10.5 17.0 16.8 17.0 17.5 17.3 16.5 1 3 3 0 10.2 000000 1015 2.7 0.0 0.7
31 6 NW 2 7 01 14.0 11.2 83 18.2 8.8 4.8 14.8 14.6 15.7 16.9 17.0 16.5 1 0 3 0 0.0 000000 1011 0.0 0.0 1.2
---------------------------------------------------------------------------------------------------------------------------
Mean
6 15.5 14.0 91 18.8 12.2 10.1 16.6 16.2 16.8 17.5 17.3 16.4 1015
Total 110.2 80.1 0.0 29.9
---------------------------------------------------------------------------------------------------------------------------
(.) Difference from 1991-2000 average used by the Weather Observers Network. Rainfall was 140% of average
Air temperatures Weather (No. days occurrence) and 137% of 1971-2000 ave.
Mean maximum 18.8 (-0.6) Sleet/snow falling 0 ( 0.0) Most in a day: 36.5 mm on 1st.
Mean minimum 12.2 (+0.1) Snow lying (at 09GMT) 0 ( 0.0) No. days with:
Mean 15.5 (-0.3) Hail <5 mm 1 [-0.1] >=0.2 mm 17 (+ 1.8)
No. days <0.0C 0 ( 0.0) Hail >=5 mm 0 [all hail] >=1.0 mm 14 (+ 2.3)
Mean grass min 10.1 (-0.2) Thunder heard 0 (-1.4) >=5.0 mm 6 (+ 0.1)
Lowest grass min 4.8 (-0.8) Gales 0 No. dry days 8 (- 4.1)
No. days <0.0C 0 ( 0.0) Fog (at 09GMT) 0
Mean soil 30cm 17.5 (+0.2) Lysimeter:
PE 36.9 mm
Highest maximum 23.0C (-2.4) on 17th. Lowest minimum 8.8 (+0.5) on 31st. PWB 73.3 mm
Minimum relative humidity: 58% on 16th and 21st. PWS 84.8 mm
* Rainfall 110.2 mm was less than the 132.4 mm in 2000 but was 23rd largest on 75y records. PWD -11.5 mm
* It was a very humid month with the 09 GMT RH on 91% the highest since November 2001.
* Potential evapotranspiration PE 36.9 mm was 2nd lowest on 7y records but the Piche Piche: 29.9 ml
* evaporimeter's 29.9 ml was the lowest.
---------------------------------------------------------------------------------------------------------------------------
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 code (01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze,
16 precipitation within sight, 17 thunderstorm no precip., 21 rain in past hour, 42 fog thinner in past hour,
50 slight drizzle, 60 intermittent sl. rain, 61 continuous sl. rain, 63 cont. moderate rain, 80 sl. rain shower,
81 mod. or heavy rain shower, 83 slight sleet shower, 86 moderate snow shower, 87 shower of ice pellets.
Temperatures (degC); RH relative humidity (%); soil temperatures are under bare soil and earth under grass (degC);
SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C, and grass Gr codes consult
'Recording Atmospheric Depositions on Grass' page.
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.
---------------------------------------------------------------------------------------------------------------------------
CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR SEPTEMBER 2002
---------------------------------------------------------------------------------------------------------------------------
-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
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01 2 00 0 7 02 13.7 9.6 76 19.7 8.4 3.8 14.5 13.9 15.2 16.8 16.9 16.3 1 0 1 0 0.0 000000 1032 0.0 0.0 1.6
02 7 00 0 7 05 15.0 13.0 88 20.8 9.1 4.1 14.3 14.3 15.5 16.8 17.0 16.3 0 0 1 0 0.0 000000 1029 0.0 0.0 1.6
03 7 NE 1 6 05 15.2 13.6 90 20.5 11.3 9.3 15.1 15.2 16.1 17.0 17.0 16.2 0 0 1 0 0.0 000000 1020 0.0 0.0 1.1
04 6 N 1 5 02 17.4 12.6 73 18.9 14.0 12.4 18.0 16.9 17.0 17.5 17.0 16.3 0 0 1 0 0.0 000000 1014 0.0 0.0 1.0
05 7 SW 4 5 03 15.4 12.3 82 16.0 12.1 11.1 16.1 16.0 16.8 17.9 17.5 16.5 0 0 1 0 0.3 000000 1011 0.2 0.0 0.9
06 7 SW 3 6 02 14.5 12.1 86 15.2 11.1 10.2 15.0 15.0 15.9 16.9 17.0 16.4 0 1 1 0 5.3 000000 1007 4.5 0.0 1.0
07 5 SW 3 6 02 12.6 11.9 95 16.0 10.0 7.7 14.0 13.9 14.6 16.5 16.9 16.9 1 3 3 0 1.2 000000 1002 1.6 0.0 1.2
08 4 NE 2 6 02 12.6 11.1 90 18.0 9.3 7.3 13.5 13.5 14.5 15.9 16.2 16.0 1 1 1 0 2.3 000000 1004 0.4 0.0 1.0
09 6 00 0 7 02 14.0 11.8 86 15.5 8.1 6.5 13.9 13.5 14.5 15.9 16.1 16.0 1 1 1 0 12.0 004000 1008 8.2 0.0 0.5
10 4 W 2 7 02 15.4 12.5 83 19.0 11.1 11.0 15.6 14.5 14.9 15.8 16.0 16.0 1 1 1 0 0.0 000000 1016 0.0 0.0 1.9
11 1 SE 2 8 02 17.0 11.9 72 22.0 11.1 9.2 16.0 14.3 15.0 16.1 16.0 16.0 1 0 1 0 0.0 000000 1026 0.0 0.0 1.5
12 8 SE 3 4 05 17.5 15.3 87 23.5 12.5 9.5 16.1 15.4 15.7 16.4 16.2 15.9 0 0 1 0 0.0 000000 1027 0.0 0.0 1.6
13 1 E 4 5 05 16.7 13.2 80 21.7 13.0 10.4 16.0 15.3 16.0 16.8 16.8 16.0 0 0 1 0 0.0 000000 1028 0.0 0.0 1.9
14 7 00 0 5 05 15.1 12.0 82 18.1 10.8 7.9 15.5 15.0 15.9 16.9 16.9 16.0 0 0 1 0 0.0 000000 1029 0.0 0.0 1.0
15 5 NE 2 5 05 14.1 11.3 83 16.8 11.8 10.1 15.0 14.7 15.8 16.8 16.9 16.0 0 0 1 0 0.6 000000 1029 1.1 0.0 1.0
16 8 00 0 5 05 13.1 11.6 91 14.9 11.9 9.5 16.1 16.1 16.1 16.9 16.9 16.0 1 2 3 0 tr 000000 1025 0.0 0.0 0.7
17 7 00 0 5 05 14.0 10.8 81 17.2 11.5 11.0 15.7 15.2 15.9 16.8 16.9 16.0 0 0 1 0 0.0 000000 1022 0.0 0.0 1.2
18 7 NE 1 5 05 14.6 12.4 87 20.5 11.1 8.2 15.3 15.1 15.7 16.5 16.6 16.0 0 0 1 0 0.0 000000 1019 0.0 0.0 1.4
19 7 NE 1 6 02 12.9 10.6 86 14.9 11.9 10.5 14.5 14.8 15.8 16.6 16.8 16.0 0 0 1 0 0.0 000000 1019 0.0 0.0 1.3
20 7 NE 2 5 05 14.9 10.8 76 17.9 11.7 9.5 14.5 14.2 15.1 16.2 16.6 16.0 0 0 1 0 0.0 000000 1022 0.0 0.0 1.4
21 6 NE 1 6 05 14.1 12.1 88 17.5 10.9 7.5 13.8 13.9 15.0 16.1 16.3 15.9 0 0 1 0 0.0 000000 1023 0.0 0.0 0.9
22 7 N 2 6 02 14.4 11.8 84 16.8 11.0 7.6 15.4 15.2 15.6 16.0 16.1 15.9 0 0 1 0 0.0 000000 1023 0.0 0.0 1.8
23 0 E 1 7 05 12.5 9.4 81 16.8 8.2 4.9 12.0 12.5 14.3 15.8 16.1 15.9 0 0 1 0 0.0 000000 1027 0.0 0.0 1.5
24 1 E 1 8 02 12.3 8.7 79 16.2 7.2 3.2 11.4 11.9 13.8 15.3 15.9 15.9 0 0 1 0 0.0 000000 1028 0.0 0.0 1.3
25 5 W 2 5 05 12.8 11.1 89 17.7 7.5 3.6 11.7 12.0 13.5 14.9 15.8 15.7 0 0 1 0 0.0 000000 1024 0.0 0.0 0.9
26 8 W 2 5 10 13.6 12.7 95 15.0 10.8 6.6 14.0 14.0 14.4 15.0 15.2 15.2 0 0 1 0 1.0 000000 1021 0.8 0.0 0.3
27 7 W 1 5 05 13.9 12.6 92 15.1 12.0 11.1 14.5 14.3 14.6 15.1 15.2 15.2 0 0 1 0 0.0 000000 1027 0.0 0.0 0.7
28 7 00 0 6 05 13.5 11.4 87 18.6 11.0 9.1 14.0 13.9 14.5 15.1 15.2 15.1 0 0 1 0 0.0 000000 1028 0.0 0.0 0.5
29 7 S 3 5 05 15.0 12.1 83 20.0 10.8 6.8 13.6 13.5 14.2 15.2 15.4 15.2 0 0 1 0 tr 000000 1023 0.0 0.0 3.1
30 8 S 4 7 03 15.4 11.5 78 21.8 13.0 7.0 14.1 14.0 14.5 15.0 15.2 15.1 0 1 1 0 0.3 000000 1018 0.2 0.0 1.9
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Mean
6 14.4 11.8 84 18.1 10.8 8.2 14.6 14.4 15.2 16.2 16.4 15.9 1021
Total 23.0 17.0 0.0 37.7
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(.) Difference from 1991-2000 average used by the Weather Observers Network. Rainfall was 23% of average
Air temperatures Weather (No. days occurrence) and 25% of 1971-2000 ave.
Mean maximum 18.1 (+1.1) Sleet/snow falling 0 ( 0.0) Most in a day: 12.0 mm on 9th.
Mean minimum 10.8 (+0.5) Snow lying (at 09GMT) 0 ( 0.0) No. days with:
Mean 14.5 (+0.8) Hail <5 mm 1 [+0.5] >=0.2 mm 8 (- 8.1)
No. days <0.0C 0 ( 0.0) Hail >=5 mm 0 [all hail] >=1.0 mm 5 (- 8.3)
Mean grass min 8.2 ( 0.0) Thunder heard 0 (-0.9) >=5.0 mm 2 (- 4.7)
Lowest grass min 3.2 (+0.3) Gales 0 No. dry days 20 (+10.9)
No. days <0.0C 0 ( 0.0) Fog (at 09GMT) 0
Mean soil 30cm 16.2 (+1.1) Lysimeter:
PE 27.3 mm
Highest maximum 23.5C (+0.9) on 12th. Lowest minimum 7.2 (+1.2) on 24th. PWB -4.3 mm
Minimum relative humidity: 56% on 11th and 28th. PWS 15.6 mm
* With 23.0 mm was the driest Sep since 1986 (11.7 mm) and ranked 2nd on record since 1928. PWD -19.8 mm
* Mean max 18.1C warmest since 1999 ranked 5th on 24 y records. Mean min 10.8C warmest
* since 2000 ranked 5th. Mean 14.5C warmest since 1999 ranked 4th. Piche: 37.7 ml
* Lowest max 14.9C on 16, 19th was warmest on record since 1979.
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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 code (01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze,
16 precipitation within sight, 17 thunderstorm no precip., 21 rain in past hour, 42 fog thinner in past hour,
50 slight drizzle, 60 intermittent sl. rain, 61 continuous sl. rain, 63 cont. moderate rain, 80 sl. rain shower,
81 mod. or heavy rain shower, 83 slight sleet shower, 86 moderate snow shower, 87 shower of ice pellets.
Temperatures (degC); RH relative humidity (%); soil temperatures are under bare soil and earth under grass (degC);
SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C, and grass Gr codes consult
'Recording Atmospheric Depositions on Grass' page.
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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CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR OCTOBER 2002
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-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
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01 1 S 1 7 01 16.0 11.8 76 22.2 12.3 7.0 13.5 13.8 14.8 15.2 15.3 15.0 0 1 3 0 0.0 000000 1018 0.0 0.0 0.8
02 7 00 0 7 05 15.0 13.0 88 19.0 11.2 8.8 13.8 13.9 15.0 15.2 15.3 15.1 0 0 1 0 5.7 000000 1017 4.4 0.0 0.8
03 5 W 2 7 03 13.0 12.4 96 18.1 9.1 6.7 11.7 12.4 14.0 14.8 15.3 15.0 1 2 3 0 0.0 000000 1021 0.0 0.0 1.0
04 7 S 2 7 05 11.0 10.0 94 17.0 8.1 5.7 11.5 11.7 13.3 14.7 15.2 15.0 1 0 1 0 0.3 000000 1029 0.3 0.0 1.1
05 8 S 2 4 54 13.8 13.3 97 15.3 10.8 10.4 14.0 14.0 14.1 14.8 14.8 15.0 1 3 3 0 0.2 000000 1028 0.3 0.0 0.5
06 3 N 2 7 01 12.9 10.0 83 16.7 12.2 10.7 13.8 14.0 14.6 14.8 15.0 15.0 1 0 3 0 0.0 000000 1024 0.0 0.0 1.2
07 6 S 1 7 05 11.6 9.0 84 14.3 9.6 7.0 12.0 12.5 14.0 14.8 15.1 14.9 0 0 1 0 tr 000000 1018 0.0 0.0 1.8
08 7 SE 1 7 02 12.9 8.5 75 17.2 10.9 8.0 12.0 12.2 13.2 14.3 14.9 14.8 0 0 0 0 0.0 000000 1008 0.0 0.0 2.4
09 6 E 2 7 05 10.8 7.0 78 15.8 10.0 8.3 11.0 11.8 13.2 14.0 14.8 14.8 0 0 0 0 0.0 000000 1005 0.0 0.0 2.0
10 3 E 2 7 05 11.4 8.2 84 16.2 8.5 4.6 9.8 10.4 12.2 13.6 14.5 14.8 0 0 1 0 tr 000000 1009 0.0 0.0 0.9
11 8 00 0 7 05 12.1 10.8 92 12.6 8.8 5.4 12.5 12.6 13.0 13.8 14.2 14.5 0 1 3 0 21.6 000000 1010 15.8 0.0 0.2
12 1 W 2 7 10 9.8 9.2 96 16.0 8.1 5.6 10.4 11.3 12.6 13.4 14.1 14.5 1 2 3 0 6.2 000000 1016 2.0 0.0 0.8
13 8 NE 1 7 02 8.7 8.3 97 10.5 5.2 2.2 10.0 10.5 12.0 13.1 14.0 14.2 1 2 3 0 19.6 000000 1008 11.5 0.0 0.4
14 8 00 0 5 65 8.6 8.4 99 11.2 7.3 6.5 10.0 10.4 11.5 12.8 13.7 14.2 1 3 3 0 0.3 000000 1008 0.0 0.0 0.4
15 8 E 4 7 05 8.6 6.9 92 9.4 7.8 4.9 9.7 10.0 11.2 12.4 13.2 14.0 1 1 3 0 0.5 000000 1003 3.0 0.0 1.8
16 8 NE 3 7 80 8.5 4.7 77 10.0 7.6 6.2 9.0 9.5 10.8 12.2 13.1 13.9 1 0 3 0 6.2 000000 1003 3.2 0.0 0.8
17 7 N 1 7 80 6.2 6.0 98 10.4 3.7 0.3 7.8 8.5 10.1 11.7 12.8 13.8 1 3 3 0 14.5 004000 1005 7.6 0.0 0.3
18 3 N 4 7 01 7.2 4.4 83 10.0 3.9 1.0 6.9 8.0 9.8 11.1 12.2 13.2 1 2 4 0 0.2 004000 1009 0.6 0.0 1.0
19 7 00 0 7 10 5.6 4.9 95 13.5 2.5 -1.4 6.2 7.0 9.0 10.6 12.0 13.1 1 2 4 0 0.6 004000 1017 0.4 0.0 0.7
20 8 E 2 7 02 7.1 3.3 77 11.6 4.9 1.6 7.5 8.2 9.1 10.6 11.8 13.0 1 0 1 0 33.2 000000 1012 14.5 0.0 0.8
21 7 S 2 6 10 11.6 11.0 96 16.3 4.8 4.3 9.3 9.0 9.2 10.2 11.4 12.8 1 2 3 0 6.0 000000 990 5.6 0.0 0.8
22 7 S 1 7 10 12.8 12.4 98 13.7 11.6 9.5 11.6 11.5 11.2 11.2 11.5 12.3 1 2 3 0 7.3 000000 998 6.4 0.0 0.4
23 3 NW 4 7 05 6.2 3.8 85 10.2 4.5 1.6 7.1 8.2 10.0 11.0 11.8 12.3 1 2 3 0 0.6 005000 999 0.2 0.0 0.9
24 1 S 3 7 01 6.3 2.7 78 12.2 2.0 -1.8 5.0 6.2 8.5 10.2 11.5 12.5 1 1 4 0 14.2 000000 1004 8.3 0.0 1.7
25 7 SW 5 7 10 11.8 11.0 95 13.1 6.3 3.5 11.0 10.6 10.3 10.5 11.2 12.1 1 2 3 0 4.6 005000 981 2.5 0.0 1.0
26 3 W 3 7 05 7.4 6.1 91 13.5 6.8 4.1 8.0 8.8 9.9 10.6 11.3 12.1 1 2 3 0 10.5 000000 1006 12.2 0.0 1.8
27 8 NW 8 5 63 7.5 7.1 97 9.5 7.2 5.5 10.0 10.2 10.2 10.8 11.2 12.0 1 3 3 0 2.8 0000G0 985 2.0 0.0 0.8
28 5 SW 3 7 05 8.3 6.1 86 12.0 5.6 0.8 7.3 7.8 9.0 10.2 11.2 12.0 1 2 1 0 3.5 000000 1024 7.6 0.0 1.0
29 8 S 1 5 61 7.4 6.1 91 8.9 6.6 5.8 8.5 8.8 9.8 10.2 11.3 12.0 1 3 3 0 5.1 000000 1032 6.8 0.0 0.2
30 8 00 0 7 10 7.5 6.4 93 12.0 6.0 4.0 8.5 8.7 8.5 10.1 11.0 11.8 1 2 3 0 0.2 000000 1014 0.2 0.0 0.5
31 7 00 0 7 04 8.6 8.0 96 14.5 4.8 0.8 7.8 7.8 8.9 9.8 10.8 11.8 1 2 1 0 tr 000000 1016 0.0 0.0 1.2
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Mean
6 9.9 8.1 89 13.6 7.4 4.8 9.9 10.3 11.4 12.3 13.1 13.6 1010
Total 163.9 115.4 0.0 30.0
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(.) Difference from 1991-2000 average used by the Weather Observers Network. Rainfall was 147% of average
Air temperatures Weather (No. days occurrence) and 146% of 1971-2000 ave.
Mean maximum 13.6 (-0.3) Sleet/snow falling 0 (-0.2) Most in a day: 33.2 mm on 20th.
Mean minimum 7.4 (-0.5) Snow lying (at 09GMT) 0 ( 0.0) No. days with:
Mean 10.5 (-0.4) Hail <5 mm 3 [+3.6] >=0.2 mm 23 (+ 3.6)
No. days <0.0C 0 ( 0.0) Hail >=5 mm 2 [all hail] >=1.0 mm 15 (- 1.1)
Mean grass min 4.6 (-0.7) Thunder heard 0 (-0.5) >=5.0 mm 12 (+ 4.0)
Lowest grass min -1.8 (-1.0) Gales 1 No. dry days 5 (- 4.0)
No. days <0.0C 2 (-0.8) Fog (at 09GMT) 0
Mean soil 30cm 12.3 (+0.3) Lysimeter:
PE 6.9 mm
Highest maximum 22.2C (+3.1) on 1st. Lowest minimum 2.0 (-1.1) on 24th. PWB 157.0 mm
Minimum relative humidity: 60% on 19th. PWS 160.1 mm
* Rainfall 163.9 mm wettest in Oct since 223.0 mm in 2000. Ranked 10th wettest on record. PWD -3.1 mm
* Hi max 22.2C warmest since 24.0C in 1997 ranked 5th on record since 1979.
* Lo max 8.8C coolest since 7.4C in 1992 ranked 7th coolest. Mean 17.3C on 1st Piche: 30.0 ml
* highest in Oct since the 19.0C in 1990 ranked 3rd warmest on record. Days with hail 5 most on record in Oct.
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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 code (01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze,
16 precipitation within sight, 17 thunderstorm no precip., 21 rain in past hour, 42 fog thinner in past hour,
50 slight drizzle, 60 intermittent sl. rain, 61 continuous sl. rain, 63 cont. moderate rain, 80 sl. rain shower,
81 mod. or heavy rain shower, 83 slight sleet shower, 86 moderate snow shower, 87 shower of ice pellets.
Temperatures (degC); RH relative humidity (%); soil temperatures are under bare soil and earth under grass (degC);
SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C, and grass Gr codes consult
'Recording Atmospheric Depositions on Grass' page.
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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CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR NOVEMBER 2002
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-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
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01 8 S 5 7 05 12.8 11.5 85 13.2 8.6 8.8 11.0 10.8 10.8 10.4 10.9 11.8 1 1 0 0 14.2 000000 1006 6.0 0.0 0.3
02 8 00 0 7 02 8.8 8.4 97 15.0 8.0 4.6 8.9 9.3 10.1 10.4 11.0 11.5 1 2 3 0 9.8 000000 1006 9.5 0.0 1.3
03 5 SW 3 6 05 10.2 7.3 82 13.5 8.8 4.5 9.0 9.5 10.7 10.8 11.0 11.5 1 2 1 0 1.7 000000 998 0.4 0.0 0.9
04 6 W 1 7 10 9.0 8.0 93 13.2 6.6 2.2 8.8 9.0 10.0 10.5 11.2 11.6 1 2 3 0 1.9 000000 1015 8.2 0.0 0.9
05 3 00 0 7 10 11.3 10.9 97 14.0 8.9 6.9 10.5 11.0 11.0 10.9 11.2 11.8 1 2 1 0 15.9 000000 1017 7.1 0.0 0.5
06 7 S 1 7 10 9.8 9.4 97 13.0 9.6 8.0 11.0 11.5 11.7 11.3 11.5 11.6 1 2 3 0 0.6 000000 1011 0.2 0.0 0.7
07 5 NW 2 6 10 6.1 4.5 89 10.8 4.8 0.8 6.7 8.1 9.8 10.8 11.3 11.6 1 1 1 0 17.8 000000 1016 8.0 0.0 0.9
08 8 SW 4 4 63 10.8 10.6 99 12.8 6.0 2.9 9.8 9.5 10.0 10.2 10.8 11.8 2 3 3 0 25.5 000000 1004 11.6 0.0 0.2
09 7 00 0 8 02 7.1 6.0 94 12.6 6.2 2.5 8.5 9.2 10.2 10.5 11.1 11.5 1 2 3 0 11.0 000000 1006 8.3 0.0 0.6
10 7 W 2 5 80 12.0 11.4 96 13.3 7.1 7.6 11.3 11.0 10.7 10.8 11.0 11.5 1 3 3 0 0.3 000000 999 0.6 0.0 0.6
11 5 W 3 7 05 8.6 6.2 85 10.5 7.9 4.4 7.8 8.8 10.0 10.5 11.1 11.5 1 2 1 0 18.6 000000 997 5.1 0.0 1.3
12 8 SW 3 7 21 7.6 6.5 93 10.4 6.0 2.1 7.5 8.0 9.0 10.0 10.9 11.3 2 2 3 0 3.3 004000 990 6.0 0.0 0.8
13 3 S 1 7 25 7.5 5.3 86 11.6 6.8 4.9 7.5 8.0 9.0 9.8 10.5 11.2 1 2 3 0 2.2 000000 985 7.5 0.0 1.0
14 8 E 2 5 10 8.7 8.5 99 9.4 7.4 4.6 8.7 9.0 9.2 9.8 10.3 11.1 1 2 3 0 4.5 000000 965 4.6 0.0 0.8
15 2 S 1 7 04 8.7 6.3 85 13.9 6.7 1.8 6.5 7.4 8.8 9.5 10.0 11.0 1 2 1 0 1.4 000000 981 0.7 0.0 0.8
16 6 N 2 7 03 7.0 4.7 85 8.5 4.8 -0.2 7.4 8.0 8.8 9.2 10.0 11.0 1 1 1 0 0.0 000000 999 0.0 0.0 0.6
17 1 00 0 8 01 3.7 3.0 95 10.7 3.2 -1.8 5.0 6.3 8.0 7.9 9.8 10.8 1 0 5 0 0.2 000000 1005 0.3 0.0 0.7
18 5 SE 1 7 04 6.1 4.0 86 11.6 3.7 -0.8 6.0 6.5 7.7 8.5 9.2 10.5 1 2 4 0 0.0 000000 1008 0.0 0.0 0.8
19 6 SE 3 7 01 7.8 3.6 75 9.7 5.4 0.2 6.1 6.6 7.6 8.4 9.3 10.4 1 0 1 0 6.7 000000 1005 8.7 0.0 1.4
20 8 SE 1 7 10 7.0 5.2 88 10.1 6.6 4.8 7.1 7.5 8.0 8.5 9.1 10.5 1 2 3 0 tr 000000 998 0.0 0.0 1.6
21 8 SE 3 7 05 10.1 6.0 76 12.0 5.9 1.8 7.5 7.7 8.0 8.5 9.2 10.2 1 0 0 0 0.4 000000 979 0.3 0.0 1.5
22 5 S 2 7 01 10.0 4.4 68 12.4 6.3 0.3 7.0 7.3 8.0 8.5 9.2 10.1 1 1 1 0 1.4 000000 979 2.5 0.0 1.1
23 6 SE 1 7 01 7.5 6.5 85 11.1 4.2 -1.5 6.0 6.5 7.5 8.2 9.1 10.1 1 2 4 0 3.5 000000 992 3.4 0.0 2.1
24 5 SE 1 7 05 8.7 5.6 81 12.6 6.8 3.7 6.0 6.8 7.6 8.2 9.0 10.0 1 2 3 0 0.0 000000 996 0.0 0.0 1.6
25 1 SE 1 8 05 7.9 5.2 83 12.3 6.7 3.0 5.0 6.2 7.2 8.0 8.9 10.0 1 1 1 0 0.5 000000 1000 1.2 0.0 1.4
26 5 S 4 7 05 9.9 7.2 83 12.5 7.5 3.5 7.0 7.3 7.8 8.0 8.9 10.0 1 2 3 0 0.9 000000 1004 2.3 0.0 3.1
27 7 S 6 6 80 12.4 7.9 74 12.4 9.9 8.5 9.2 9.0 8.9 8.5 9.0 9.9 1 2 3 0 19.2 000000 995 11.2 0.0 1.6
28 6 S 2 7 10 7.1 6.9 99 10.8 7.0 5.2 7.5 8.0 8.5 9.0 9.1 9.8 2 3 3 0 14.8 005T00 997 6.3 0.0 0.3
29 7 SE 1 5 10 7.3 7.1 99 9.5 6.5 4.3 7.1 7.5 8.0 8.3 9.0 9.9 1 2 3 0 0.3 000000 1006 0.1 0.0 0.2
30 8 SW 2 4 60 8.6 8.2 97 11.7 7.2 4.5 7.6 7.7 8.0 8.3 8.9 9.9 1 3 3 0 8.0 000000 1016 7.5 0.0 0.9
0.0
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Mean
6 8.7 6.9 88 11.8 6.7 3.4 7.8 8.3 9.0 9.4 10.0 10.8 999
Total 184.6 127.6 0.0 30.5
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(.) Difference from 1991-2000 average used by the Weather Observers Network. Rainfall was 149% of average
Air temperatures Weather (No. days occurrence) and 147% of 1971-2000 ave.
Mean maximum 11.8 (+1.3) Sleet/snow falling 0 (-0.5) Most in a day: 25.5 on 8th
Mean minimum 6.7 (+1.5) Snow lying (at 09GMT) 0 (-0.1) No. days with:
Mean 9.3 (+1.4) Hail <5 mm 1 [-2.0] >=0.2 mm 26 (+ 3.7)
No. days <0.0C 0 (-1.3) Hail >=5 mm 1 [all hail] >=1.0 mm 19 (+ 2.0)
Mean grass min 3.4 (-0.7) Thunder heard 1 (+0.2) >=5.0 mm 11 (+ 2.3)
Lowest grass min -1.8 (+1.6) Gales 0 No. dry days 3 (- 1.7)
No. days <0.0C 4 (-5.1) Fog (at 09GMT) 0
Mean soil 30cm 9.4 (+0.7) Lysimeter:
PE 4.9 mm
Highest maximum 15.0C (+0.1) on 2nd. Lowest minimum 3.2 (+2.5) on 17th. PWB 179.7 mm
Minimum relative humidity: % on ..... PWS 179.7 mm
* A warm month with the mean 9.3C ranked 2nd since 1979. Warmest was 1994 with 10.1 and PWD 0.0 mm
* 1993 with 9.2C a close 3rd. The mean max 11.8C was second warmest to the 12.4C in 1994.
* The mean min of 6.7 was similarly 2nd warmest to the 7.9C of 1994. Rainfall of 184.6 mm Piche: 30.5 ml
* was the 9th wettest Nov since 1928. Was wettest since 2000 with 250.5mm then back to 1972 with 197.9 mm.
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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 code (01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze,
16 precipitation within sight, 17 thunderstorm no precip., 21 rain in past hour, 42 fog thinner in past hour,
50 slight drizzle, 60 intermittent sl. rain, 61 continuous sl. rain, 63 cont. moderate rain, 80 sl. rain shower,
81 mod. or heavy rain shower, 83 slight sleet shower, 86 moderate snow shower, 87 shower of ice pellets.
Temperatures (degC); RH relative humidity (%); soil temperatures are under bare soil and earth under grass (degC);
SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C, and grass Gr codes consult
'Recording Atmospheric Depositions on Grass' page.
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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CLIMATOLOGICAL OBSERVATIONS AT LLANSADWRN, ANGLESEY, FOR DECEMBER 2002
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-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 5 7 10 8.5 6.3 86 9.3 6.0 2.9 8.2 8.3 8.1 8.3 8.9 9.8 1 2 3 0 3.3 0000G0 994 5.8 0.0 1.2
02 8 NW 5 7 05 7.6 4.9 83 8.4 7.5 5.3 7.2 7.8 8.0 8.3 8.8 9.5 1 2 3 0 6.2 000000 996 10.6 0.0 0.6
03 6 NW 1 6 10 7.4 7.2 99 9.6 7.2 5.0 7.0 7.6 8.0 8.3 8.8 8.8 1 2 3 0 6.7 000000 1006 6.3 0.0 0.6
04 3 W 1 6 10 5.7 5.2 97 8.0 5.6 2.1 6.8 7.6 8.2 8.3 8.8 9.8 1 2 1 0 1.6 004000 1008 1.8 0.0 0.3
05 2 N 2 7 05 6.2 4.6 89 9.2 3.9 0.6 4.5 5.4 6.8 7.8 8.7 9.8 1 2 4 0 tr 000000 1027 0.0 0.0 0.7
06 7 NE 1 5 05 6.0 5.3 95 7.5 3.4 -0.5 4.9 5.2 6.1 7.1 8.2 9.5 1 2 4 0 0.0 000000 1035 0.0 0.0 0.3
07 8 E 2 7 05 5.5 3.6 90 6.0 4.0 1.1 5.2 5.6 6.5 7.1 8.2 9.5 1 1 1 0 0.0 000000 1031 0.0 0.0 0.8
08 8 E 3 6 04 4.8 3.4 90 6.2 4.0 1.6 4.9 5.3 6.3 7.0 8.2 9.3 1 0 0 0 0.0 000000 1027 0.0 0.0 0.9
09 1 E 6 7 04 2.3 -1.1 78 4.6 2.1 -0.3 1.6 3.0 5.2 6.4 7.8 9.1 1 0 5 0 0.0 000000 1025 0.0 0.0 1.3
10 2 E 6 7 04 2.0 -1.7 76 4.1 1.5 -1.7 1.0 2.1 4.0 5.3 7.2 8.8 3 0 5 0 0.0 000000 1023 0.0 0.0 1.7
11 6 E 6 7 04 1.5 -2.6 74 2.6 1.5 -0.3 1.1 2.1 3.5 5.0 6.7 8.8 0 0 5 0 0.2 s03000 1019 0.2 0.0 1.4
12 8 E 3 6 05 2.4 0.0 84 3.6 1.2 -0.4 2.0 2.5 3.5 4.7 6.3 8.4 1 0 6 0 0.9 000000 1015 2.8 0.0 0.3
13 4 NE 1 7 05 1.6 1.1 96 7.1 0.8 -3.2 1.8 2.6 3.6 4.7 6.1 8.2 0 2 5 0 0.1 000000 1019 0.0 0.0 0.3
14 8 E 1 4 10 4.6 4.6 100 5.2 1.0 -3.8 2.8 2.8 3.5 4.4 5.9 7.9 1 2 4 0 1.5 000000 1017 5.5 0.0 0.3
15 8 NE 2 5 61 4.7 4.2 97 5.5 4.5 3.6 4.4 4.5 5.2 5.0 5.8 7.9 1 3 3 0 6.6 000000 1012 18.0 0.0 0.4
16 8 NE 1 6 61 4.5 4.0 97 5.0 4.0 3.4 4.5 4.9 5.2 5.3 6.1 7.8 1 3 3 0 3.7 000000 1015 8.1 0.0 0.3
17 6 NE 1 7 05 3.2 1.9 91 5.4 2.9 -0.9 3.4 4.2 5.1 5.4 6.2 7.8 1 2 4 0 0.0 000000 1027 0.0 0.0 0.4
18 1 NE 1 7 04 0.5 -1.8 84 4.9 -0.7 -5.4 0.8 1.8 3.5 4.5 6.1 7.8 3 6 7 0 0.0 000000 1032 0.0 9.5 1.2
19 4 SE 2 8 03 1.1 -2.4 77 7.8 -0.3 -4.8 0.2 1.3 2.8 3.8 5.4 7.6 3 6 5 0 0.0 000000 1027 0.0 1.6 1.2
20 6 E 1 7 05 2.1 -0.1 85 6.5 1.1 -2.9 0.6 1.3 2.5 3.2 5.0 7.2 2 5 5 0 0.0 000000 1015 0.0 0.0 0.7
21 6 NE 1 7 04 5.0 4.3 95 10.5 2.1 -1.2 3.7 3.9 4.0 4.0 5.0 7.0 1 2 4 0 9.9 000000 1014 6.2 0.0 0.3
22 8 SW 1 5 10 9.1 9.1 100 14.3 5.0 2.8 7.2 6.8 6.0 5.3 5.3 7.0 1 2 3 0 5.8 000000 1005 5.6 0.0 0.7
23 7 S 5 7 02 14.2 10.0 76 15.2 5.3 1.3 8.5 7.9 6.8 6.0 6.0 7.0 1 2 3 0 7.3 000000 1000 6.8 0.0 2.2
24 8 S 7 5 63 11.0 10.2 95 11.0 10.3 8.3 9.2 8.8 8.0 7.3 7.0 7.2 2 3 3 0 3.6 000000 993 2.5 0.0 0.4
25 8 SW 1 6 25 9.3 8.7 96 10.0 8.5 6.2 7.7 7.7 9.0 7.6 7.4 7.6 1 2 3 0 13.2 000000 1005 4.5 0.0 0.5
26 8 NE 1 4 65 8.0 8.0 100 9.6 6.0 0.5 7.2 7.2 7.2 7.2 7.5 7.8 2 3 3 0 6.1 000000 991 3.6 0.0 0.3
27 2 S 1 7 01 6.3 4.9 91 10.6 6.1 0.7 6.5 7.2 7.5 7.4 7.6 7.9 1 2 1 0 0.3 000000 981 1.3 0.0 0.2
28 2 N 1 7 10 6.2 5.8 97 8.0 5.7 1.1 6.2 6.8 7.2 7.3 7.8 7.9 1 2 1 0 9.1 000000 1001 6.2 0.0 0.4
29 8 E 1 4 63 6.5 6.5 100 11.0 4.2 0.4 6.2 6.3 6.8 6.9 7.0 7.9 2 3 3 0 22.8 000000 995 14.1 0.0 0.1
30 7 E 2 3 42 6.0 6.0 100 8.0 6.0 5.0 7.0 7.5 7.8 7.5 7.5 8.0 1 2 2 0 0.2 000000 997 0.0 0.0 0.5
31 7 E 1 7 05 4.5 2.3 85 10.0 4.4 3.2 5.5 6.1 6.9 7.3 7.6 8.2 1 1 3 0 4.0 000000 1012 4.4 0.0 1.1
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Mean
6 5.4 3.9 90 7.9 4.0 1.0 4.8 5.2 5.9 6.2 7.1 8.3 1012
Total 113.1 114.3 11.1 21.6
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(.) Difference from 1991-2000 average used by the Weather Observers Network. Rainfall was 90% of average
Air temperatures Weather (No. days occurrence) but 115% of 1971-2000 ave.
Mean maximum 7.9 ( 0.0) Sleet/snow falling 1 (-2.0) Most in a day:
Mean minimum 4.0 (+1.0) Snow lying (at 09GMT) 0 (-0.1) No. days with:
Mean 6.0 (+0.5) Hail <5 mm 2 [-3.5] >=0.2 mm 20 (- 1.2)
No. days <0.0C 2 (-4.0) Hail >=5 mm 0 [all hail] >=1.0 mm 16 (- 0.6)
Mean grass min 1.0 (+0.7) Thunder heard 0 (-0.8) >=5.0 mm 10 (+ 0.9)
Lowest grass min -5.4 (+1.2) Gales 1 No. dry days 9 (+ 3.1)
No. days <0.0C 12 (-2.6) Fog (at 09GMT) 0
Mean soil 30cm 6.2 (+0.1) Lysimeter:
PE -9.0 mm
Highest maximum 15.2C (+2.7) on 23rd. Lowest minimum -0.7 (+1.8) on 18th. PWB 122.1 mm
Minimum relative humidity: 50% on 19th. PWS 122.4 mm
* Maximum of 15.2C on 23rd was highest in December on record here since 1979. PWD -0.3 mm
*
* Mean minimum 4.4C was ranked 4th warmest but the mean maximum was ranked 13th. Piche: 21.6 ml
* Consequently the mean of 6.0C was ranked only 9th warmest.
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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 code (01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 04 smoke haze, 05 haze,
16 precipitation within sight, 17 thunderstorm no precip., 21 rain in past hour, 42 fog thinner in past hour,
50 slight drizzle, 60 intermittent sl. rain, 61 continuous sl. rain, 63 cont. moderate rain, 80 sl. rain shower,
81 mod. or heavy rain shower, 83 slight sleet shower, 86 moderate snow shower, 87 shower of ice pellets.
Temperatures (degC); RH relative humidity (%); soil temperatures are under bare soil and earth under grass (degC);
SS snow depth (cm); Press air pressure, aneroid (mb). For state of the ground E, concrete C, and grass Gr codes consult
'Recording Atmospheric Depositions on Grass' page.
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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Monthly and annual summary statistics at Llansadwrn, Anglesey for 2002 Total rainfall 1187.2 mm
was 108% of average
(.) Difference from 1992-01 average used by the Weather Observers Network. Most in a day: 36.5 (Aug 1),
33.7 mm (Feb 10) and
Air temperatures Weather (No. days occurrence) 33.2 mm (Oct 20).
Mean maximum 13.6 (+0.3) Sleet/snow falling 5 (-8.7) No. of days with:
Mean minimum 7.4 (+0.5) Snow lying (at 09GMT) 0 (-3.5) >=0.2 mm 213 (+ 4)
Mean 10.5 (+0.4) Hail <5 mm 23 [+ 0.2] >=1.0 mm 161 (+ 2)
No. days <0.0C 7 (-12.1) Hail >=5 mm 4 [all hail] >=5.0 mm 78 (+ 3)
Mean grass min 5.0 (+0.2) Thunder heard 3 (-5.5) No. dry days 109 (- 1)
Lowest grass min -7.3 (+1.2) Gales 25
No. days <0.0C 57 (-12.5) Fog (at 09GMT) 0 Lysimeter:
PE 300.0 mm
Highest maximum 24.7 (-3.0) on May 16th. Lowest minimum -2.3 (+1.9) on Jan 2nd. PWB 887.2 mm
Minimum relative humidity: 31% on Jan 2nd. PWS 1019.2 mm
* Days with airfrost 7 lowest on record. Frost-free from Mar 3rd to Dec 17th. PWD -132.1 mm
Days with ground frost 57. Frost-free from May 5th to Oct 18th. Piche: 439.2 mls
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Annual summaries for 1999 (No. days occurrence at 09 GMT).
Cloud cover Wind direction Wind speed Visibility Code Description
Cloud obscured 2 N 26 Calm 36 <100 m 0 Dense fog 0
8/8 cloud 117 NE 39 Force 1-3 227 100-190 m 1 Thick fog 0
6/8 to 7/8 155 E 30 Force 4-5 77 200-390 m 2 Fog 0
3/8 to 5/8 48 SE 25 Force 6-7 18 400-900 m 3 Mod. fog 1
1/8 to 2/8 37 S 77 Force 8-12 7 1.0-1.9 km 4 Very poor 16
Sky cloudless 6 SW 74 2.0-3.9 km 5 Poor 72
W 37 Days 365 4.0-9.0 km 6 Moderate 64
Days 365 NW 21 10 km or mo 7 Good 212
Calm 36
Days 365
Days 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)
Code 0 1 2 3 4 5 6 7 8 9 Days
Jan 3 2 1 18 3 1 0 3 0 0 31
Feb 1 2 0 19 2 2 1 0 0 1 28
Mar 1 7 2 12 8 1 0 0 0 0 31
Apr 2 9 1 12 6 0 0 0 0 0 30
May 1 12 0 16 2 31
Jun 4 7 0 19 0 0 30
Jul 3 13 1 14 0 0 31
Aug 1 10 3 17 31
Sep 0 28 0 2 30
Oct 2 7 0 19 3 31
Nov 2 9 0 16 2 1 0 0 30
Dec 1 4 1 12 5 6 1 1 0 0 31
Yr 21 110 9 176 31 11 2 4 0 1 365
State of ground
Code 0 1 2 3 4 5 6 7 8 9 Days
Jan 0 25 1 2 0 1 2 0 31
Feb 0 25 3 0 0 0 0 0 28
Mar 0 30 1 0 0 0 31
Apr 9 20 0 1 0 0 0 30
May 12 19 31
Jun 11 19 30
Jul 11 20 31
Aug 5 26 0 31
Sep 23 7 0 30
Oct 7 24 0 31
Nov 0 27 3 0 30
Dec 2 22 4 3 0 0 0 0 0 31
Yr 80 264 12 6 0 1 2 0 0 0 365
State of concrete
Code 0 1 2 3 4 5 6 7 8 9 Days
Jan 4 2 11 11 0 1 2 0 31
Feb 6 1 14 7 0 0 0 0 28
Mar 13 1 14 3 0 0 0 31
Apr 15 5 5 5 0 0 30
May 17 7 4 3 31
Jun 21 2 2 5 30
Jul 19 6 2 4 31
Aug 15 5 4 7 31
Sep 23 5 1 1 30
Oct 9 4 13 5 31
Nov 3 5 18 4 30
Dec 5 2 16 5 0 1 2 0 31
Yr 150 45 104 60 0 2 4 0 0 0 365
These pages are designed and written by Donald Perkins © 1998 - 2002Page dated 1 January 2002: http://www.llansadwrn-wx.co.uk |