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FEBRUARY 2012 daily and monthly summary

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FEBRUARY 2012
March

Feb 2012 Monthly stats summary
‡ 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"

   DAILY STATS FEBRUARY 2012
 
TEMPERATURE ºc
HUMIDITY
SUN ‡
PRESSURE
RAINFALL
WIND SPEED
DIRECTION
 WEATHER
 NOTES
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 ‡
                       
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.
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.