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FEBRUARY 2006 daily and monthly summary

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FEBRUARY 2006
March 2006


Note A total hosepipe and sprinkler ban remains in effect in the Mid Kent Water supply area until further notice.
1st - 7th Anticyclonic gloom! The 4th is still mostly overcast but a little brighter. The first sunshine of the month arrived on the morning of the 5th but the dreary overcast returned on the 6th and 7th.
8th - 11th A rare event this year as a rain bearing front passes through early morning on the 8th, the first wet day in 12. This clears away the stagnant pool of weather to bring clearer skies and finally some overdue long sunny periods although becoming increasingly cloudy
12th - 17th The 12th was dull and rainy all day, and the wettest day since the 2nd December. The start of an milder but unsettled period of weather with a deep low stalling near the NW. The 15th saw the highest temperature since Christmas Eve and the wettest 24h since the 2nd December..
18th - 23rd Low pressure sinks S and then E dragging in cloud, rain and cooler airflow from the continent. A wet and very miserable weekend 18th & 19th. Continuing very dull with only brief brighter intervals, frequent showers and those increasingly wintry.
24th - 28th Becoming brighter and drier with some sunny spells, but still cool with a considerable wind chill on the 25/26th. The 27th was dull but a cold front swept down from the north early morning 28th bringing rain then brighter weather with an afternoon snow flurry.

 FEBRUARY 2006 - MONTHLY SUMMARY  
 TEMPERATURE
 Average Maximum 6.3
ºc 
( -1.1)
 Average Minimum 2.3
ºc 
( -0.1)
 Monthly Mean 4.1
ºc 
 
 Highest Maximum 11.2
ºc 
(15th)
 Lowest Minimum -1.7
ºc 
(2nd)
 Days with Min <=0ºc 6
 
   
 
 AMBIENT TEMPERATURE
 Low Wind Chill -2.2
ºc 
(3rd)
 Low Heat Index (THW) -2.1
ºc 
(3rd)
 High Heat Index (THW) 11.1
ºc 
(13th)
 High Sun Index (THSW) 20.1
ºc 
(17th)
    
 
 RAINFALL
 Monthly Total 43.5
 mm
( 87%)
 Rainy Days (=>0.2mm) 14
( ±0)
 Inc days =>1mm) 10
 
 Dry Days 14
( ±0)
 Highest Daily Total 11.9
 mm
 (15th)
 Highest Rain Rate 6.3
 mm/hr
 (15th)
   
 EVAPO-TRANSPIRATION
 Highest Daily 1.31
 mm (28th)
 Monthly Total 16.1
 mm
 WIND
 Monthly Average 2.1  mph  
 Highest Gust 27  mph (15th)
 Dominant Directions SSW  (29%)
N  (19%)
NNW  (12%)
NNW  (11%)
     
 SUNSHINE†
 Sunniest Day
4.2
 hrs (9th)
 Monthly Sunshine
25.8
 Hours
 Peak Solar Rad.
639
 w/m² (28th)
 Total Solar Energy
1983
 Langleys
 
   
 DEWPOINT
 Average at 14.00h 0.7 ºc
 Highest Reading 7.8 ºc   (13th)
 Lowest Reading -8.9 ºc   (28th)
 RELATIVE HUMIDITY
 Average at 14.00h 72 %
 Lowest Reading 36 % (28th)
 Monthly Average 78 %
 BAROMETER
 Monthly Mean 1014.9  hPa  
 Highest Reading 1032.6  hPa (5th)
 Lowest Reading 981.7  hPa (18th)

Sunshine Hours are approximate only and calculated from the sensor's limited exposure to direct sun, no allowance for visual only observation. As the sensor receives less than 50% of total possible sunshine exposure this month, the figures above can be very significantly less than the actual sunshine duration.
* = deviation from 20 year average. The monthly mean is calculated from all logged temperatures and is not the simple mean of the daily minimum and maximum.
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"

   FEBRUARY 2006
 
TEMPERATURE ºc
HUMIDITY
SUN ‡
PRESSURE
RAINFALL
WIND SPEED
DIRECTION
DATE
Minimum
(21-09h)
Maximum
(09-21h)
RH %
at 14.00
Dewpoint ºc
at 14.00
Bright
sun hrs
hPa †
at 14.00
Day Total
(mm)
Average
(mph)
High Gust
(mph)
Dominant
(Compass)
                   
1st
-1.1 0.8 84 -2.4 0.0 1022.5 st 0.0 0.2 5 SE
2nd
-1.7 0.9 86 -2.1 0.0 1021.7 st 0.0 0.3 7 N
3rd
-1.3 2.7 79 -2.2 0.0 1023.4 fs 0.0 0.7 7 N
4th
2.3 5.7 72 0.8 0.0 1029.1 st 0.0 0.4 10 N
5th
0.0 9.4 72 4.0 2.7 1031.7 fs 0.0 0.5 8 SSW
6th
4.7 6.8 68 0.7 0.0 1028.6 fs 0.0 1.0 11 W
7th
6.4 8.6 69 2.9 0.0 1021.0 f  0.0 3.6 22 SSW
8th
4.1 8.3 61 1.0 0.8 1009.6 rs 2.0 2.6 20 W
9th
1.3 5.5 46 -5.3 4.2 1017.1 rs 0.0 2.2 18 NNW
10th
-0.8 6.9 57 -1.8 2.0 1023.8 st 0.0 0.5 8 N
11th
0.4 6.5 56 -1.9 0.5 1026.5 fs 0.0 0.5 8 SSW
12th
0.8 8.3 92 5.3 0.0 1020.4 f  7.6 2.0 14 SSW
13th
7.8 11.1 77 6.9 0.2 1017.7 fs 0.3 1.4 13 SSW
14th
5.3 11.0 71 5.5 2.0 1011.2 fs 0.3 4.5 22 SSW
15th
6.9 11.2 67 4.8 1.5 993.9 fs 11.9 6.1 27 SSW
16th
6.0 9.6 65 2.6 2.2 983.9 fs 1.0 4.9 20 SSW
17th
5.3 10.7 61 2.5 1.0 986.0 rs 0.3 3.1 20 SSW
18th
-0.1 5.9 88 3.8 0.0 991.8 rs 1.3 0.1 7 ESE
19th
2.9 5.9 91 4.1 0.0 996.0 st 6.6 1.0 14 WSW
20th
3.8 5.5 72 0.6 0.0 1011.8 r  3.8 3.8 21 N
21st
1.9 4.5 84 1.3 0.0 1017.7 st 2.5 3.0 20 N
22nd
2.7 3.3 84 0.5 0.0 1024.7 rs 1.8 2.1 13 N
23rd
0.9 1.9 90 0.4 0.0 1021.0 f  3.3 1.0 11 N
24th
-0.9 4.1 74 -1.3 1.5 1018.4 st 0.0 1.5 12 N
25th
2.3 5.1 67 -1.4 1.5 1016.6 st 0.0 3.8 21 NE
26th
1.6 5.9 52 -3.6 2.5 1023.5 st 0.0 2.5 14 N
27th
2.3 5.4 82 1.2 0.0 1018.1 fs 0.0 2.1 12 N
28th
1.7 5.5 42 -7.2 3.2 1005.7 fs 0.8 3.7 19 N
                     
‡ SUN: Sunshine hours are calculated approximately and solely from solar radiation readings, but note that the solar sensor's exposure to sunshine in midwinter is very limited. The sensor receives only 40-50% 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.
* Precipitation from melted snow.
† Barometer trend: f = falling, st = steady, r = rising; q = quickly, s = slowly

'WIND ROSE' PLOT FOR THE MONTH
Feb 2006 wind rose
The 'petals' represent wind direction and the length represents frequency, i.e. in this case winds from the SSW were the most common, followed by the N.

The colours represent the strength of the wind, with black being weakest through blue then lighter colours (cyan, light green, yellow, magenta, red) being stronger.

This data excludes 'calm' readings.