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FEBRUARY 2012
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‡ SUN: Sunshine hours are calculated approximately and solely from solar radiation readings, but note that the solar sensor's exposure to sunshine is limited. The sensor receives only up to 60% of total possible sunshine exposure this month due to obstruction. There is no allowance for sunshine by visual observation only, so the sunniest day figures above can be very significantly less than the actual daily sunshine duration. THW = Shaded Heat Index calculated with cooling/warming effect of wind and humidity to give an apparent temperature. THSW = Unshaded Heat Index calculated with cooling/warming effect of wind, humidity and full direct sunshine to give an apparent temperature. EVAPO-TRANSPIRATION is drying effect due to sun and wind, and is equivalent to "negative rainfall" |
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DAILY STATS FEBRUARY 2012 |
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TEMPERATURE ºc |
HUMIDITY |
SUN ‡ |
PRESSURE |
RAINFALL |
WIND SPEED |
DIRECTION |
WEATHER NOTES ‡ |
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DATE |
Low (21-09h) |
High (09-21h) |
Temp at 14.00z |
RH % at 14.00z |
Dewpoint ºc at 14.00z |
Bright sun hrs |
hPa at 14.00z |
Day Total (mm) |
Average (mph) |
Max Gust (mph) |
Dominant (Compass) |
Precipitation type etc ‡ |
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1st |
-0.9 | 3.4 | 3.2 | 50 | -6.2 | 2.7 | 1030.3 | ST | 0.0 | 1.7 | 22 | NE | Sunny periods |
2nd |
-1.2 | 1.6 | 1.2 | 46 | -9.1 | 3.7 | 1033.0 | ST | 0.0 | 1.9 | 14 | NE | Sunny |
3rd |
-3.6 | 1.6 | 1.6 | 47 | -8.6 | 3.2 | 1037.3 | FS | 0.0 | 0.5 | 11 | N | Sunny periods |
4th |
-2.9 | 1.1 | 0.9 | 68 | -4.4 | 0.8 | 1035.5 | F | 1.0 | 1.0 | 14 | SE | Snow eve/night |
5th |
-1.0 | 0.7 | 0.4 | 89 | -1.2 | 0.0 | 1027.7 | RS | 6.1 | 0.1 | 10 | SE | Snow am |
6th |
0.4 | 2.9 | 2.3 | 92 | 1.1 | 2.0 | 1031.6 | ST | 0.0 | 0.1 | 5 | SE | Sunny spells pm. |
7th |
-2.1 | 2.1 | 1.9 | 59 | -5.3 | 5.7 | 1039.3 | RS | 0.0 | 0.5 | 11 | ENE | Sunny |
8th |
-2.9 | 0.9 | 0.7 | 79 | -2.5 | 0.0 | 1037.9 | FS | 0.0 | 1.3 | 11 | N | Overcast |
9th |
-0.8 | 2.5 | 1.8 | 70 | -3.1 | 3.2 | 1036.8 | FS | 0.0 | 0.4 | 7 | N | Sunny spells |
10th |
-1.1 | 2.6 | 2.3 | 51 | -6.8 | 3.8 | 1036.8 | FS | 0.0 | 0.4 | 13 | SE | Sunny pm |
11th |
-8.4 | 3.2 | 2.7 | 59 | -4.5 | 5.8 | 1034.1 | FS | 0.0 | 0.2 | 8 | N | Sunny |
12th |
-7.1 | 3.6 | 2.8 | 88 | 1.0 | 0.0 | 1031.3 | FS | 0.0 | 0.6 | 10 | N | Light snow am |
13th |
0.6 | 5.6 | 5.6 | 78 | 2.1 | 0.5 | 1022.3 | F | 1.0 | 1.9 | 17 | N | Rain pm |
14th |
3.8 | 7.6 | 7.1 | 68 | 1.5 | 1.5 | 1022.8 | FS | 0.0 | 3.1 | 21 | N | Cloudy |
15th |
5.8 | 10.2 | 9.8 | 62 | 2.9 | 0.7 | 1023.8 | ST | 0.3 | 2.8 | 20 | N | Rain showers am |
16th |
5.9 | 9.8 | 9.8 | 60 | 2.4 | 1.0 | 1025.4 | F | 0.0 | 1.1 | 10 | SSW | Cloudy |
17th |
6.2 | 10.6 | 10.0 | 81 | 6.9 | 0.8 | 1021.6 | F | 0.0 | 1.6 | 13 | SSW | Cloudy |
18th |
7.6 | 10.7 | 10.5 | 63 | 3.7 | 0.8 | 1007.8 | F | 2.5 | 4.8 | 27 | SW | Rain pm |
19th |
0.9 | 6.6 | 6.4 | 46 | -4.4 | 4.5 | 1024.6 | R | 0.0 | 1.8 | 16 | N | Sunny periods |
20th |
-4.4 | 8.4 | 7.8 | 48 | -2.5 | 6.3 | 1030.3 | FS | 0.0 | 1.4 | 17 | SW | Sunny |
21st |
3.9 | 12.1 | 12.1 | 58 | 4.0 | 2.7 | 1026.9 | FS | 0.0 | 2.5 | 17 | SSW | Cloudy |
22nd |
5.9 | 9.3 | 8.4 | 71 | 3.5 | 1.3 | 1022.3 | F | 0.5 | 5.3 | 24 | SW | Rain pm |
23rd |
7.6 | 17.4 | 16.6 | 70 | 11.1 | 5.5 | 1022.1 | FS | 0.0 | 2.0 | 14 | WNW | Sunny pm |
24th |
8.8 | 14.4 | 14.2 | 69 | 8.6 | 2.2 | 1025.5 | ST | 0.0 | 1.7 | 13 | SSW | Fair |
25th |
6.9 | 12.2 | 12.1 | 52 | 2.5 | 3.5 | 1024.4 | F | 0.0 | 0.4 | 12 | N | Sunny pm |
26th |
1.4 | 13.6 | 12.1 | 58 | 4.1 | 5.7 | 1027.0 | FS | 0.0 | 0.4 | 8 | SSW | Sunny periods |
27th |
5.7 | 10.5 | 10.0 | 77 | 6.2 | 0.2 | 1022.7 | FS | 0.0 | 1.7 | 12 | SSW | Overcast |
28th |
9.3 | 14.3 | 13.8 | 74 | 9.3 | 0.3 | 1022.2 | FS | 0.0 | 1.0 | 11 | SSW | Cloudy |
29th |
9.3 | 14.9 | 14.2 | 65 | 7.7 | 5.0 | 1022.9 | FS | 0.0 | 1.2 | 8 | SSW | Sunny spells pm |
| ‡ SUN: Sunshine hours are calculated approximately and solely from solar radiation readings, but note that the solar sensor's exposure to sunshine is rather limited. The sensor receives less than 25% of total possible sunshine exposure this month, and there is no allowance for sunshine by visual observation only, so the figures above can be very significantly less than the actual daily sunshine duration. |
| Barometer trend (previous 3 hours) : F = falling, ST = steady, R = rising; Q = quickly, S = slowly |
| ‡ Weather Notes use METAR codes: OVC = overcast; SHRA = rain showers; '+' = heavy; CAVOK = no cloud below 5000 ft & visibility> 10 km & no fog, precipitation or snow; SN = snow; RASN = Rain and snow |
| 1st | A sunny day with a cloudy spell in mid morning. |
| 2nd | HP 1038 hPa N England stretching to NE Europe. LPs to far S and NW A day with long sunny periods but quite strong wind chill. |
| 3rd | Air frost but dry air gives little or no ground frost. A cloudy start giving way to sunny periods especially in the afternoon. |
| 4th | A cloudy day with a bright spell around 14.00h. Light snow starts around 20.00 becoming moderate from 21.30 and settling. |
| 5th | Moderate snow lasts overnight until around 07.00 giving 8cm snow cover. Very slow thaw reduces snow cover a little. |
| 6th | Slow thaw continues with visible reduction of snow cover overnight and through the day. |
| 7th |
Thaw is a little slower in bright sunshine. Still patches of snow cover remain here and there, less than 1.5cm.
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| 8th | An overcast and rather dull day, little if any thawing of snow remnants. |
| 9th | Some hazy sunny spells and a slightly faster thaw but some snow patches remain.
Some very light snowfall briefly evening, not settling. |
| 10th | Cloudy early am becoming bighter with sunshine after midday. |
| 11th | Lowest minimum since 18 December 2010, but dry air gives little ground frost. A sunny day. |
| 12th | Graupel (soft hail) and snow grains for a brief spell around 08.30, staying overcast and misty almost all day. |
| 13th | HP 1042 hPa Atlantic 50°N 20°W, LP 998 hPa W of Norway. Brief brightness mid-morning becoming overcast with rain pm which clears the last remaining few small snow remnants. |
| 14th | A cloudy day with a little light drizzle for a few minutes in the morning and short spells of brightness. |
| 15th | Some light rain overnight from the 14th. Mainly cloudy day with a couple of brief light rain showers and a few sunny intervals. |
| 16th & 17th | Mainly cloudy with a few sunny intervals. |
| 18th | LP 975 hPa Norwegian Sea. Cold fronts moving southwards over the UK. Mainly cloudy with some bright spells in the morning. Becoming cloudier with rain, briefly heavy, from the cold front mid/late afternoon. |
| 19th | HP 1032 hPa SSW of Ireland at 50°N 10 °W. Some long sunny periods, especially first thing and afternoon. |
| 20th | A day of sunny periods although thin high cloud makes for rather hazy sunshine at times. |
| 21st | Some bright sunny spells in the morning, mainly cloudy in the afternoon. |
| 22nd | Cloudy morning with some bright spells, some light rain in the afternoon for an hour or so. |
| 23rd | Bright but cloudy morning giving way to sunshine in the afternoon. New site record for maximum temperature in February. |
| 24th | Bright but cloudy with a couple of long sunny spells. |
| 25th | Overcast start, cloud slowly clearing to give a sunny afternoon. |
| 26th | Sunny start, cloud increasing from late morning. Mixture of long sunny and shorter cloudy spells. |
| 27th | A overcast day, sometimes dull with very brief brightness early morning. |
| 28th | Rather cloudy, cloud breaking a little to give some short lived weak sunshine in the afternoon. |
| 29th | Cloudy but bright with some weak hazy sunshine morning, clearing a little to give sunny spells afternoon. |