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This
page contains the April 2005 monthly stats and daily summaries for my
own site readings.
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APRIL 2005 |
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Largely a fine and settled start
to April, with a warm and sunny weekend of 2nd / 3rd April thanks to high
pressure sitting to the SE of the UK. A dramatic change on the 8th as
low pressure systems swept past to the north, bringing a plunge of polar
air with hail and even snow showers. The air frost on the 9th was the
first in April for 2 years. The weather continued to be changeable, bringing
much needed rain but also some fine, sunny and warm spring afternoons.
The 25th was the wettest day since the 17th December 2004, but the month
ended on a warm note with the 23.6ºc recorded on the 30th being the
2nd highest April maximum since recording here began in 1987..
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| APRIL 2005 - MONTHLY SUMMARY | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| *
= deviation from 20 year average. The monthly mean is calculated from all
logged temperatures and is not the 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. |
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APRIL
2005
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TEMPERATURE ºc
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HUMIDITY
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SOLAR RAD
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PRESSURE
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RAINFALL
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WIND SPEED
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DIRECTION
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DATE
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Minimum
(< 09h) |
Maximum
(< 21h) |
RH %
at 14.00 |
Dewpoint ºc
at 14.00 |
% of max
(Noon GMT) |
hPa †
at 14.00 |
Day Total
(mm) |
Average
(mph) |
High Gust
(mph) |
Dominant
(Compass) |
 |
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1st
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6.8 | 17.4 | 55 | 7.0 | 47 | 1023.2 fs | 0.0 | 0.4 | 10 | SE |
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2nd
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6.4 | 19.8 | 28 | -0.1 | 76 | 1018.2 fs | 0.0 | 0.6 | 14 | SE |
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3rd
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5.4 | 19.2 | 45 | 6.4 | 70 | 1019.0 s | 0.0 | 1.9 | 18 | SSW |
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4th
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7.7 | 12.3 | 78 | 5.7 | 6 | 1020.2 s | 0.0 | 1.4 | 13 | SSW |
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5th
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4.2 | 12.2 | 48 | 1.3 | 55 | 1024.8 fs | 0.0 | 2.8 | 19 | SSW |
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6th
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6.3 | 11.3 | 76 | 5.5 | 20 | 1009.1 fs | 0.3 | 6.1 | 25 | SSW |
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7th
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6.8 | 12.1 | 56 | 3.0 | 26 | 999.5 s | 2.8 | 5.0 | 21 | SSW |
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8th
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3.2 | 7.1 | 68 | 0.3 | 20 | 1010.7 rs | 0.5 | 4.8 | 25 | N |
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9th
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-1.1 | 10.3 | 47 | -1.9 | 58 | 1024.0 s | 0.0 | 2.9 | 18 | N |
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10th
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5.8 | 16.3 | 46 | 2.5 | 73 | 1025.8 rs | 0.0 | 1.8 | 14 | N |
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11th
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3.2 | 17.6 | 46 | 4.4 | 74 | 1028.9 fs | 0.0 | 0.5 | 10 | SSW |
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12th
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3.9 | 14.2 | 65 | 7.6 | 22 | 1021.0 fs | 0.0 | 1.4 | 12 | SSW |
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13th
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7.1 | 12.6 | 66 | 5.9 | 34 | 1007.5 f | 2.0 | 1.5 | 12 | SSW |
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14th
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7.1 | 9.7 | 87 | 5.4 | 7 | 1001.2 s | 6.1 | 1.1 | 11 | SSW |
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15th
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5.7 | 9.1 | 87 | 4.6 | 9 | 1004.2 rs | 2.5 | 0.2 | 6 | SSW |
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16th
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1.2 | 12.4 | 57 | 2.5 | 29 | 1009.2 s | 0.0 | 0.9 | 11 | N |
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17th
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0.4 | 14.9 | 40 | 0.4 | 77 | 1002.5 fs | 2.3 | 1.3 | 13 | SSW |
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18th
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7.3 | 14.7 | 49 | 3.2 | 19 | 996.4 r | 3.3 | 3.0 | 19 | SSW |
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19th
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3.3 | 16.8 | 54 | 6.2 | 26 | 1004.2 rs | 2.8 | 0.7 | 14 | SE |
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20th
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3.3 | 15.3 | 62 | 4.7 | 82 | 1012.9 rs | 0.0 | 0.5 | 10 | N |
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21st
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6.3 | 17.2 | 28 | -1.8 | 77 | 1019.0 s | 0.0 | 0.7 | 12 | SE |
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22nd
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2.4 | 18.2 | 38 | 2.2 | 75 | 1012.8 f | 0.0 | 1.1 | 18 | SE |
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23rd
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6.9 | 15.6 | 60 | 6.9 | 22 | 1009.1 s | 0.3 | 0.5 | 12 | SE |
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24th
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6.2 | 17.2 | 63 | 9.1 | 27 | 1007.4 fs | 2.3 | 0.4 | 8 | N |
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25th
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8.7 | 11.7 | 88 | 9.3 | 19 | 1008.5 rs | 13.2 | 0.3 | 7 | SSW |
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26th
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7.3 | 13.7 | 86 | 8.7 | 9 | 1009.6 fs | 0.5 | 2.3 | 19 | SSW |
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27th
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6.1 | 14.1 | 81 | 6.1 | 82 | 1016.0 s | 2.5 | 3.3 | 21 | SSW |
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28th
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9.1 | 15.3 | 58 | 6.4 | 51 | 1015.2 s | 1.3 | 3.2 | 21 | SSW |
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29th
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9.8 | 18.4 | 62 | 10.0 | 78 | 1018.8 s | 0.5 | 1.2 | 11 | SSW |
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30th
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12.4 | 23.6 | 65 | 13.4 | 27 | 1013.2 fs | 0.0 | 0.8 | 11 | SE |
| Solar Rad(iation) reading indicates
the state of the sky (approximately) at just after 12h00 GMT as below: 1 - 10 = Dull overcast; 11 - 20 = overcast; 21 - 49 = cloudy; 50 - 74 = hazy or interrupted sunshine; 75 - 100 = bright uninterrupted sunshine |
| † Barometer trend: f = falling, s = steady, r = rising; r = rapidly, s = slowly |
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'WIND ROSE' PLOT FOR THE MONTH
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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 SE. 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. |