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FEBRUARY 2013 daily and monthly summary

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FEBRUARY 2013
March 2013

February 2013 Monthly summary stats
‡ 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 less than 40% of total possible sunshine exposure this month due to low sun altitude and 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 2013
 
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
4.9 8.4 5.9 88 4.1 0.1 997.1 FS 5.6 1.6 17 SSW  Rain am
2nd
2.6 4.8 4.6 64 -1.6 0.7 1016.8 R 0.3 4.4 20 N  Cloudy
3rd
0.0 8.9 7.5 83 4.8 0.0 1014.0 F 0.0 2.4 20 SSW  Overcast
4th
8.4 10.3 10.0 53 0.8 1.7 1011.9 FS 0.0 4.2 20 SW  Cloudy
5th
2.3 6.4 5.4 51 -4.0 3.2 997.8 F 2.0 4.1 22 SSW  Rain/sleet
6th
3.3 5.5 5.3 68 -0.1 0.2 1007.1 R 0.8 5.5 27 N  Rain am
7th
0.6 5.6 5.4 58 -2.2 3.8 1015.2 F 0.5 1.4 14 N  Rain eve
8th
0.4 5.2 4.8 61 -2.1 2.7 1017.6 FS 0.5 2.0 18 N  Drizzle eve
9th
1.0 4.3 4.0 78 0.5 0.0 1017.1 F 0.5 0.6 11 N  Drizzle eve
10th
2.8 4.3 3.5 90 2.0 0.0 994.5 F 8.4 2.0 19 SE  Rain
11th
0.4 2.0 1.9 92 0.7 0.0 998.8 R 4.6 0.6 8 N  Snow & sleet
12th
0.9 2.4 2.2 73 -2.2 0.0 1015.3 RS 0.0 0.5 8 N  Overcast
13th
-0.7 2.4 1.4 69 -3.7 0.2 1021.6 FS 0.0 1.2 14 SE  Cloudy
14th
1.3 10.5 10.3 68 4.7 1.8 1009.2 RS 3.3 2.4 19 SW  Rain am
15th
3.3 10.0 9.7 59 2.1 2.8 1019.2 ST 0.0 0.8 10 SSW  Sunny spells
16th
4.1 9.3 9.1 62 2.2 0.2 1022.7 FS 0.0 0.1 5 SE  Cloudy
17th
-1.4 10.6 10.2 57 2.0 3.2 1020.2 F 0.0 0.3 11 SE  Fog am
18th
-1.2 9.7 9.6 55 1.0 5.8 1019.3 FS 0.0 0.3 11 SE  Sunny
19th
-2.4 9.7 9.4 60 2.0 5.7 1017.5 F 0.0 0.1 7 N  Fog am, sunny
20th
0.7 6.8 6.8 56 -1.4 4.3 1022.9 FS 0.3 1.2 18 ENE  Rain am, sunny pm
21st
-0.1 2.8 2.6 51 -6.5 0.5 1022.4 F 0.0 1.6 13 ENE  Cloudy
22nd
0.3 1.4 1.3 69 -3.7 0.0 1018.7 FS 0.3 1.5 13 N  Light snow showers
23rd
-0.3 1.2 1.2 63 -5.1 0.2 1019.8 ST 0.5 2.2 14 N  Snow am
24th
0.4 1.9 1.7 64 -4.4 0.0 1022.4 ST 0.5 3.6 20 N  Light snow am
25th
1.2 3.8 3.7 82 0.9 0.0 1026.0 ST 0.8 2.8 16 N  Drizzle
26th
2.4 4.4 4.3 87 2.3 0.0 1032.1 ST 0.5 1.4 12 N  Drizzle
27th
2.1 4.4 4.2 74 -0.0 0.5 1032.6 FS 0.0 1.9 13 N  Cloudy
28th
2.8 5.1 5.0 78 1.5 0.0 1027.6 FS 0.0 1.7 13 NE  Overcast
                         
‡ 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 65% 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
LP 995 hPa Northern Ireland. Rain from 03.30 to noon becoming drizzly by mid morning. Cloudy but bright afternoon.
2nd
Some light rain in the early hours. A bright morning with some short sunny spells, increasingly cloudy through the afternoon.
3rd
An overcast day and rather dull.
4th
A bright day with spells of high cloud and short sunny spells.
5th
LP 977 hPa NE Scotland. Spell of rain in the early hours. A bright day with some sunny spells before a band of light snow/sleet/rain in the evening.
6th
Brief spell of rain in the early hours. A mainly cloudy day with some brightness in the morning, more dull in the afternoon with light rain showers.
7th
A bright morning with sunny spells with increasing high cloud coming down from the north. More middle and low cloud in the afternoon with a spell of rain in early evening.
8th
A bright morning with sunny spells with increasingly cloudy afternoon. A band of drizzle passes through early evening.
9th
A cloudy/overcast day, neither bright nor dull.
10th
LP 991 hPa W Wales coast tracking SSE. Some rain overnight, rather dismal morning with light rain and drizzle. A wet afternoon with rain, sleet and snow at various times.
11st
Brief spell of heavy snow around 02.30 gives a covering of about 1cm, this largely gone by daybreak. A rather dreary overcast and raw day with intermittent light snow and sleet throughout the day.
12th
An overcast, rather dull and murky day.
13th
A bright early morning with some hazy sunshine. Becoming cloudy then overcast and rather dull. Some very light snow briefly in the evening.
14th
Rain from arond 04.00 to 08.30. A cloudy but fairly bright morning clearing to give some short sunny spells in the afternoon.
15th
HP 1025 hPa Biscay. A mixture of sunny and cloudy spells from morning to early afternoon, more cloudy from mid afternoon onwards.
16th
A fair day but high cloud doesn't really break and prevents all but a short sunny interval before the skies clears more a little before sunset.
17th
Foggy morning, slowly clearing to give a sunny spell followed by a longer cloudy period. A sunny period to end the day.
18th
Shallow mist in the morning clears around 09.30 to give a day of long sunny periods, more hazy in the afternoon due to high cloud .
19th
Freezing fog in the morning with visibility down to 100m. Fog clears around 10.45 to give clear sky and sunshine.
20th
Some light rain/drizzle before sunrise. The morning cloud clears to give long sunny periods in the afternoon.
21st
A mainly cloudy but fair day with a little sunshine in the morning and afternoon. A couple of brief light snow flurries in the evening.
22nd
Mainly overcast with occasional broken cloud, but with regular although intermittent light snow flurries. Snowflakes and sometimes graupel is not heavy enough to settle during the day.
23rd
HP 1030 hPa S Norway, LP 993 hPa near Sardinia. More flurries of snow in the night giving a light dusting. Prolonged snow in the morning, mainly light but sometimes heavier clearing around 11.30. Very little accumulation and thawing quickly. Just brief glimpse of sunshine with a dull afternoon.
24th
An overcast and rather dull day with flurries of light snow grains in the morning. Cloud breaks a little in late afternoon.
25th
Some sleety drizzle in the morning, remaining dull and overcast all day. Further drizzle in the night.
26th
Drizzle early morning, another overcast and very dull day.
27th
An overcast morning, slowly brightening to give a little sunshine in late afternoon.
28th
An overcast day and fairly dull throughout.