|
JANUARY 2008
|
||
| 1st - 7th | Fog during morning of 1st, light rain late afternoon. HP of 1061hPa around St Petersburg and LP 961hPa to W gives chilly SE winds with light wintry showers around midday 3rd. Very gloomy on the 4th with rain from 7pm to 11pm, brighter on the 5th with an afternoon shower. :ight rain overnight 6th/7th and showers mid afternoon 7th. |
| 8th - 14th | Mostly very unsettled with strong winds and rain, although the 9th was bright after clearance of a cold front overnight. The 10th gloomy with rain late afternoon and evening. Secondary LP in the English Channel moving NE on the 11th brings moderate rain through the morning. The 12th is a bright and sunny day with light rain just before midnight and early morning 13th. |
| 15th - 21st | Continuing very unsettled. Deep lows over UK on 15th, an atrocious day with widespread stormy winds and heavy rain. 16th was brighter with some sunshine, 17th was drizzly am with heavy shower pm. Another wet morning 18th brings very mild Tropical Maritime air, the night of 18th/19th was the mildest January night recorded here since data collection started in 1984. |
| 22nd - 31st | HP starts to establish over Spain and France with LPs to the north, becoming much brighter and more settled. Long sunny periods 26th and 27th. Fog morning of 28th and mist 29th am. On the 31st a vigorous LP at 956 hPa and deepening passes the North of Scotland bringing Arctic Maritime air with snow to northern Britain. |
| JANUARY 2008 MONTHLY 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 30% 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 JANUARY
2008 |
||||||||||||
|
TEMPERATURE ºc |
HUMIDITY |
SUN ‡ |
PRESSURE |
RAINFALL |
WIND SPEED |
DIRECTION |
||||||
|
DATE |
Minimum (21-09h) |
Maximum (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) |
High Gust (mph) |
Dominant (Compass) |
|
 |
||||||||||||
|
1st |
5.3 | 8.6 | 8.5 | 90 | 7.0 | 0.0 | 1020.6 | f | 0.8 | 0.1 | 3 | SW |
|
2nd |
2.9 | 3.9 | 3.7 | 71 | -1.1 | 1.5 | 1012.8 | f | 0.3 | 1.5 | 19 | SE |
|
3rd |
-0.1 | 2.4 | 1.1 | 87 | -0.8 | 0.0 | 998.9 | fs | 0.3 | 1.1 | 17 | SE |
|
4th |
2.3 | 8.6 | 7.7 | 88 | 5.9 | 0.0 | 1000.1 | fs | 5.8 | 2.2 | 20 | SW |
|
5th |
6.8 | 8.4 | 8.1 | 66 | 2.1 | 0.4 | 999.3 | rs | 0.3 | 4.3 | 24 | SSW |
|
6th |
2.0 | 7.7 | 7.4 | 69 | 2.1 | 0.8 | 1010.8 | fs | 0.5 | 1.9 | 22 | SSW |
|
7th |
6.7 | 9.6 | 8.1 | 80 | 4.8 | 0.9 | 1009.9 | st | 0.8 | 5.7 | 26 | SSW |
|
8th |
5.4 | 9.8 | 9.7 | 80 | 6.4 | 0.0 | 1010.9 | f | 2.0 | 5.2 | 25 | SSW |
|
9th |
5.7 | 7.9 | 7.8 | 65 | 1.6 | 1.5 | 1010.2 | st | 0.5 | 4.9 | 24 | SSW |
|
10th |
6.6 | 10.9 | 10.4 | 81 | 7.3 | 0.0 | 999.7 | f | 2.0 | 7.0 | 30 | SW |
|
11th |
6.9 | 9.7 | 9.6 | 83 | 6.9 | 0.1 | 987.5 | f | 14.3 | 2.3 | 25 | SW |
|
12th |
2.4 | 7.7 | 7.6 | 71 | 2.7 | 2.0 | 1008.3 | rs | 0.3 | 2.8 | 19 | SSW |
|
13th |
7.7 | 10.6 | 10.2 | 76 | 6.2 | 0.3 | 1003.4 | f | 1.5 | 5.3 | 32 | SW |
|
14th |
6.8 | 9.3 | 9.2 | 78 | 5.5 | 0.8 | 996.0 | fs | 3.0 | 5.9 | 25 | SW |
|
15th |
7.4 | 10.9 | 10.9 | 88 | 9.0 | 0.0 | 980.2 | f | 27.9 | 7.4 | 34 | SW |
|
16th |
4.7 | 7.9 | 7.7 | 77 | 3.9 | 0.6 | 993.7 | r | 0.0 | 1.8 | 17 | SSW |
|
17th |
-0.1 | 10.7 | 9.9 | 89 | 8.2 | 0.0 | 996.8 | f | 1.3 | 3.9 | 21 | SSW |
|
18th |
7.4 | 12.5 | 11.9 | 90 | 10.4 | 0.0 | 1009.2 | st | 3.3 | 6.2 | 26 | SSW |
|
19th |
12.2 | 13.1 | 12.9 | 83 | 10.1 | 0.0 | 1019.5 | rs | 0.0 | 6.9 | 25 | SSW |
|
20th |
11.8 | 12.8 | 12.5 | 81 | 9.3 | 0.0 | 1020.0 | fs | 0.0 | 6.1 | 21 | SSW |
|
21st |
10.3 | 10.7 | 10.4 | 84 | 7.8 | 0.0 | 1007.9 | fq | 0.8 | 6.6 | 26 | SSW |
|
22nd |
3.4 | 7.3 | 7.3 | 63 | 0.7 | 2.2 | 1027.0 | rs | 0.0 | 2.1 | 21 | SSW |
|
23rd |
4.9 | 11.9 | 11.3 | 84 | 8.7 | 0.0 | 1023.8 | fs | 0.3 | 5.4 | 25 | SSW |
|
24th |
10.2 | 10.9 | 9.9 | 54 | 1.1 | 1.5 | 1027.5 | r | 0.0 | 3.6 | 18 | SSW |
|
25th |
1.4 | 10.1 | 9.9 | 63 | 3.2 | 1.8 | 1035.3 | fs | 0.0 | 3.9 | 20 | SSW |
|
26th |
5.7 | 10.3 | 9.9 | 67 | 4.1 | 3.2 | 1033.1 | f | 0.0 | 3.9 | 19 | SSW |
|
27th |
4.3 | 10.4 | 10.2 | 71 | 5.2 | 3.5 | 1032.3 | fs | 0.0 | 2.0 | 14 | SSW |
28th |
-0.1 | 6.1 | 5.3 | 92 | 4.1 | 1.5 | 1032.1 | f | 0.0 | 0.6 | 7 | SSW |
29th |
1.9 | 10.1 | 9.6 | 73 | 5.0 | 2.0 | 1024.9 | f | 0.0 | 1.7 | 12 | SSW |
30th |
4.1 | 7.1 | 6.9 | 60 | -0.3 | 3.2 | 1027.2 | st | 2.8 | 2.2 | 19 | N |
31st |
2.7 | 8.7 | 8.2 | 88 | 6.4 | 0.2 | 999.8 | fq | 6.1 | 7.1 | 34 | SSW |
| ‡ 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 approx 50% 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 |