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JULY 2012 daily and monthly summary

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JULY 2012
August

July 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 JULY 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
10.7 17.6 13.7 83 10.9 1.7 1014.4 RS 3.0 3.3 19 SSW  Rain showers
2nd
10.7 17.8 16.4 70 11.0 1.5 1014.4 FS 1.5 3.2 18 SW  Rain pm/evening
3rd
14.6 17.3 16.6 85 14.1 0.2 1013.0 FS 2.8 1.8 12 SW  Rain/drizzle
4th
15.2 22.1 21.3 65 14.4 4.0 1007.8 FS 2.3 1.6 16 SW  Rain am
5th
13.9 23.1 22.6 47 10.7 5.3 1007.9 ST 0.0 1.2 13 SW  Sunny spells
6th
14.1 20.0 19.2 65 12.5 4.3 1005.4 ST 2.0 1.2 16 SW  Rain pm
7th
11.1 17.8 16.2 81 12.9 1.5 1006.3 FS 4.8 1.0 14 SE  Rain showers
8th
12.9 20.3 18.6 70 13.0 2.7 1004.6 RS 12.2 1.0 11 N  Rain
9th
13.9 17.4 16.2 77 12.1 0.3 1010.7 RS 0.0 2.4 12 SSW  Cloudy
10th
11.6 17.1 14.9 83 12.1 1.7 1009.4 FS 4.1 2.1 17 SSW  Rain showers
11th
10.8 18.6 13.6 83 11.0 3.8 1010.1 ST 14.2 2.6 20 SSW  T-storms pm
12th
9.2 18.1 17.9 52 7.9 3.8 1011.6 FS 6.6 2.5 16 SW  Rain pm/eve
13th
11.9 17.9 16.3 70 10.8 2.5 1000.3 FS 0.5 3.5 18 SW  Rain night am
14th
12.4 18.2 14.3 84 11.6 1.2 1004.8 R 12.4 2.0 14 SSW  Rain showers +
15th
11.1 18.1 16.4 54 7.1 3.5 1015.7 R 0.5 1.5 13 SSW  Rain am
16th
11.4 15.4 14.4 86 12.1 0.0 1018.4 FS 1.3 4.4 22 SW  Rain/drizzle
17th
13.2 21.7 21.1 62 13.5 3.7 1020.9 FS 0.0 3.3 16 SSW  Sunny spells
18th
13.6 18.1 16.6 79 12.9 1.3 1010.9 F 2.8 4.1 19 SW  Rain pm/eve
19th
12.7 19.1 17.7 63 10.6 3.0 1010.4 RS 0.0 2.5 19 SSW  Sunny spells
20th
11.1 19.1 17.9 59 9.8 2.8 1015.1 RS 0.0 0.9 10 N  Cloudy
21st
10.6 20.6 20.1 50 9.3 3.3 1023.0 RS 0.0 0.6 10 SSE  Sunny spells
22nd
9.5 22.7 22.6 39 7.9 8.3 1025.5 FS 0.0 1.5 13 SW  Sunny
23rd
10.7 26.1 25.9 40 11.3 9.0 1020.8 FS 0.0 1.6 16 SW  Sunny
24th
12.1 30.4 29.4 30 10.1 9.0 1015.2 FS 0.0 0.4 10 SE  Sunny
25th
12.6 30.9 30.3 33 12.2 8.3 1014.6 FS 0.0 0.4 10 SE  Sunny
26th
14.9 28.6 28.3 41 13.8 8.8 1015.9 FS 0.0 0.4 10 SE  Sunny
27th
13.9 25.1 24.0 56 14.7 3.2 1010.0 FS 1.5 0.5 10 N  Rain night pm
28th
13.9 21.5 21.5 39 7.0 4.3 1008.7 FS 0.0 1.1 11 N  Sunny spells
29th
10.2 19.3 18.4 54 8.9 4.7 1010.4 ST 3.6 2.7 21 SSW  Rain shower pm
30th
8.1 19.4 18.6 42 5.4 4.3 1014.2 ST 0.0 2.2 17 SSW  Sunny spells
31st
12.1 20.2 18.6 74 13.9 2.2 1012.9 ST 0.0 2.1 16 SSW  Cloudy
                         
‡ 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
LP 998 hPa N of Shetland. Bright morning with a rain shower around 10.00. Sunny spells then a period of cloud and moderate rain showers, clearing in the evening.
2nd
LP 1006 hPa NW Ireland. Some bright spells and sunny intervals in the morning, becoming more cloudy in the afternoon with drizzle by early evening.
3rd
LP 999 hPa To west of Ireland. Early morning rain followed by drizzle on and off through the day. Some brief weak sunshine in the evening.
4th
LP 1001 hPa To west of Ireland. Early morning rain and drizzle ending around 09.00. Mainly cloudy morning but brightening up in the afternoon to give some sunny spells.
5th
LP 1007 hPa West Brittany. A mainly cloudy morning with a couple of sunny intervals, some sunny spells in the afternoon and evening.
6th
LP 1004 hPa Central England. A dull morning with some intermittent light rain. Spell of moderate rain for an hour from 12.45. Brighter with sunny intervals for most of the afternoon.
7th
LP 998 hPa Bristol Channel. Heavy rain shower around 09.00. Further showers with brief sunny intervals but mainly cloudy and dull. More persistent rain from late evening.
8th
LP 1003 hPa Thames Estuary moving slowly ENE. Some heavy bursts of rain overnight with a short dry spell in midmorning, Further spells of rain from 11.30 and a couple of showers in the afternoon with some short sunny spells.
9th
A cloudy/overcast day with just the briefest glimpse of sun in mid-morning. Sky clears a little in the evening.
10th
Still low pressure dominates giving mainly a cloudy day with a rain shower early afternoon and a longer spell of rain showers during evening.
11th
Some sunny spells in the morning and early afternoon. Series of thunderstorms with heavy rain pass over from 14.30 to 21.30.
12th
A little rain overnight. A bright morning with some long sunny spells, cloudy by mid--afternoon. Light rain arrives around 17.00 and continues overnight..
13th
LP 1000 hPa North Wales. Rain and drizzle clears in the early hours. Mainly cloudy day with some sunny intervals, spots of rain briefly pm.
14th
Yet more rain overnight. Bright morning with a few sunny intervals before showers again with one very heavy around 18.15. A cool and wet Saturday.
15th
Light rain/drizzle early morning. Cloud slowly clears to give some sunny spells in the afternoon.
16th
A drab, damp and gloomy day. Outbreaks of light rain/drizzle from midmorning to late afternoon.
17th
A sunny start but becoming more cloudy as the day goes on.
18th
Cloudy to start with a few sunny intervals in the morning and early afternoon. Overcast with rain from late afternoon.
19th
A bright start with sunny periods early, becoming cloudier with brief sunny spells from mid-morning.
20th
A bright start with sunny intervals, mainly cloudy in the afternoon but sunny spells later.
21st
Sunny to start but clouding over by 09.00. Sunny intervals but mainly cloudy from mid afternoon. Brightening again towards evening.
22nd
HP 1028 hPa English channel. A sunny day with just a brief cloudier spell in the morning.
23rd
HP 1030 hPa Poland stretching west to 1025 hPa Azores. A rarity this summer: a day of uninterrupted sunshine.
24th
Another day of uninterrupted sunshine.
25th
A sunny morning, some patchy altocumulus in the afternoon interrupts the sunshine on and off for an hour.
26th
Uninterrupted sunshine for nearly the whole day, a little hazy at times.
27th
LP 1003 hPa NW of Scotland. Mainly cloudy but bright with some sunny spells. Rather hazy. Two or three rain showers after 21.30.
28th
Cloudy morning, a little rain briefly around 09.00. Some sunny spells in the afternoon and evening.
29th
Sunny morning but cloud increases after 09.00. Sunny spells with a thundery 10 minute downpour just after 17.00.
30th
Sunny start but again cloud spreads from mid-morning. Some sunny spells through afternoon and early evening.
31st
Mainly cloudy with a couple of brief outbreak of drizzle, a few sunny intervals in the afternoon and evening.