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AUGUST 2012 daily and monthly summary

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AUGUST 2012
September

August 2012 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 only up to 65% 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 AUGUST 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
12.3 22.7 19.7 73 14.7 3.0 1006.7 FS 0.5 1.5 16 SW  Rain pm, night
2nd
13.9 20.3 20.2 59 11.9 5.2 1010.6 ST 1.5 3.6 21 SW  Rain showers
3rd
11.9 20.6 20.6 54 10.9 6.0 1011.4 FS 0.5 3.3 19 SW  Rain shower pm
4th
13.6 20.3 19.5 61 11.8 2.3 1008.6 FS 1.8 2.4 17 SW  Rain am
5th
12.1 21.9 21.2 51 10.7 7.2 1005.3 FS 0.0 1.6 17 SW  Sunny periods
6th
13.3 21.8 19.2 59 11.0 2.7 1008.9 RS 2.5 2.3 19 SSW  Rain showers
7th
10.9 18.9 18.2 61 10.6 0.5 1020.1 RS 0.0 2.2 16 SSW  Cloudy
8th
14.6 22.2 21.2 65 14.4 1.7 1021.4 ST 0.0 1.3 11 SSW  Cloudy
9th
12.6 25.3 24.1 56 14.8 4.5 1024.6 ST 0.0 0.5 11 SE  Sunny spells
10th
11.4 26.6 24.0 47 12.0 6.0 1024.0 FS 0.0 0.5 12 SE  Sunny spells
11th
12.1 25.1 24.4 38 9.1 8.2 1017.6 F 0.0 0.9 17 SE  Sunny
12th
12.8 26.3 25.0 42 11.2 6.5 1010.0 ST 0.0 1.7 14 SW  Sunny periods
13th
14.2 22.3 20.0 69 14.1 1.8 1010.1 ST 10.9 1.2 13 SW  Thundery rain eve.
14th
15.6 24.0 23.8 55 14.2 6.5 1010.3 FS 2.5 0.9 11 SE  Rain shwr. night am
15th
14.6 22.9 22.2 69 16.2 2.0 1002.5 RS 0.8 1.8 22 SW  Light rain
16th
15.6 21.6 20.6 56 11.5 4.2 1015.2 RS 0.0 2.8 17 SW  Cloudy
17th
16.6 26.8 24.6 50 13.5 7.2 1013.6 ST 0.0 1.8 16 SW  Sunny
18th
16.2 29.7 29.0 39 13.6 8.0 1012.9 ST 0.0 0.9 10 SSW  Sunny
19th
17.2 27.7 26.0 61 17.9 4.2 1012.2 F 0.0 1.1 11 SSW  Sunny spells
20th
15.6 24.3 23.5 57 14.5 5.7 1018.9 FS 0.0 1.6 13 SW  Sunny spells
21st
14.2 23.0 20.9 53 10.9 3.8 1015.2 FS 0.0 1.6 13 SSW  Cloudy
22nd
12.3 21.1 20.8 48 9.4 5.2 1016.2 FS 0.0 2.6 18 SSW  Sunny spells
23rd
11.0 22.4 20.9 47 9.2 4.2 1012.1 F 0.0 1.2 11 SSW  Sunny spells
24th
12.4 21.4 19.9 58 11.4 1.3 1002.8 F 2.3 1.1 12 SW  Rain pm
25th
14.7 19.5 19.2 70 13.6 2.5 999.9 RS 5.6 3.6 21 SW  Rain showers
26th
13.0 20.9 20.3 46 8.3 5.2 1015.6 RS 0.0 2.5 16 SSW  Sunny spells
27th
9.6 21.6 20.8 51 10.3 2.7 1011.6 F 1.0 1.7 16 SW  Rain eve/night
28th
14.6 21.1 20.7 58 12.2 5.7 1013.7 RS 0.0 3.0 18 SSW  Sunny spells
29th
11.7 19.5 13.2 81 10.0 2.8 1012.0 RS 1.3 2.5 21 SW  Rain pm
30th
12.6 17.4 15.3 66 9.0 1.3 1015.7 R 1.5 3.3 20 N  Rain showers am
31st
7.3 17.9 17.0 38 2.6 7.0 1027.8 ST 0.0 2.5 16 N  Sunny periods
                         
‡ 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 978 hPa S of Iceland, W of Donegal.
Early sun, becoming cloudy with spell of light rain early afternoon. Sunny spells afterwards. Spell of rain around midnight into the 2nd.
2nd
Following some overnight rain, mainly cloudy morning with a spell of rain showers late morning. Sunny spells in the afternoon and evening
3rd
A day of sunny spells but a rain shower just after midday.
4th
One rain shower before dawn and another around 06.00. Sunny spells in the morning but mostly cloudy later.
5th
A cloudy spell in the morning but sunny periods in the afternoon and evening.
6th
Slack LP 1003 hPa North Sea. Pre-dawn showers then a cloudy day with sunny intervals. Thundery shower mid afternoon.
7th
Sunny start before 07.00 before cloud moves in. Only a very brief bright spell in early afternoon.
8th
Mainly cloudy day with sunny intervals.
9th
HP 1028 hPa N Wales. A sunny start becoming more cloudy after 10.00. Mixture of cloudy and sunny spells in the afternoon.
10th
A similar day to the 9th but slightly longer sunny spells.
11th
Long sunny periods although increasingly hazy with thin high cloud as the day goes on.
12th
A day with long sunny spells interrupted by patches of medium and high cloud.
13th
LP 995 hPa NW of Ireland. Mainly cloudy day with some sunny intervals. Thundery rain after 19.00 with some very heavy bursts.
14th
Heavy rain shower around 03.30. Cloudy morning clearing to sunny spells becoming longer sunny periods from late afternoon.
15th
LP 978 hPa S of Ireland at 50°N 10 °W. Some light rain late am from warm front, some moderate rain pm from cold front.
16th
Some very light drizzle in the morning, cloudy day with sunny intervals.
17th
Mainly cloud morning with some sunny intervals, longer sunny spells and periods in the afternoon and evening.
18th
Sunny day with a few patches of high and medium cloud occasionally.
19th
Sunny start, becoming cloudy in late morning with a couple of brief light showers. Brightening up in late afternoon.
20th
Cloudy and murky start, cloud slowly clears though late morning to give sunny spells.
21st
LP 999 hPa S of Iceland, LP to S & SE, HP 1019 hPa S Sweden. Mainly cloudy day with some bright/sunny spells. Brief light rain shower early evening.
22nd
Mixture of sunny and cloudy spells through the day.
23rd
Mainly cloudy but with some sunny spells morning and afternoon.
24th
Mainly cloudy with some sunny intervals in the morning, and a spell of rain from 16.00 - 18.00.
25th
LP 997 hPa N Midlands of England. Frequent rain showers through the day, mainly brief but some heavy. A few short sunny interludes.
26th
Weak ridge of HP. Sunny morning, with increasing cloud through the afternoon.
27th
LP 978 hPa W of Scotland at 15°W. Sunny start clouding over by 10.00. Some sunny intervals followed by spells of rain in the evening.
28th
Sunny until around 10.30 then a mixture of cloudy and sunny spells.
29th
Bright start becoming cloudy. Light rain arrives at around 14.00 lasting 3 hours also bringing a sharp drop in temperature for the rest of the day.
30th
Moderate rain shower in the night, a sunny morning becoming cloudy with occasional light rain showers. Cloudy afternoon but bright end to the day.
31st
HP 1034 hPa WNW of Galicia. Sunny but fresh morning, sunny periods with some patches of cloud in the afternoon.