April 2010 Summaries And Statistics

[TonyH]

April 2010 statistics and summary for Lampeter, west Wales

Summary

Dry, mild and sunny, although with plentiful frosts

Not much in the way of cool weather this month, and it was often dry and settled.

1st-6th: April started off unsettled with rain/ showers and wind. The 1st was cold, even with a spell of snow in the morning.

7th-24th: Completely dry and settled with lots of sunshine but frosty nights. Generally days were rather warm to warm, peaking at almost 20c, however the 20th/ 21st were cool, sunny days. Frosts occurred on most nights though, with 10 air frosts during this spell, and down as low as -2.8c. Large diurnal variations prevailed, the mean daily range was 15.7c for the period 8th-24th. The largest range was of 21c on the 24th (from a frosty -1c to a warm 19.8c). This was the longest dry spell (drought) since March- April 2007 (23 days).

25th - 28th : Warm and mostly dry apart from some rain on the 25th. Cloudier than of late but with sunny spells at times. A very warm 20.8c on the 28th.

29th -30th: An unsettled last couple of days, with rain at times and mostly cloudy. Temperatures down to average.

Statistics

Total rainfall: 43.6mm

Wettest day: 7.6mm 6th

Rain days >0.2mm: 10

Wet days >1.0mm: 9

Days of heavy rain >10mm: 0

Mean temperature: 8.4c

Mean Max: 14.7c

Mean Min: 2.1c

High max: 20.8c 28th

Low Max: 6.1c 1st

High min: 10.1c 29th

Low min: -2.8c 22nd

Air frost: 10

Ground frost: 19

Mean RH: 78%

High RH: 97% various dates

Low RH: 31% 24th

Predominant wind directions: NNW and SSE

Mean wind speed: 1.7mph

Mean pressure: 1018mbar

Max pressure: 1034mbar 9th

Min pressure: 994mbar 2nd

Days with:

Hail: 1

Sleet or snow: 1

Snow lying 0900: 0

Gale: 0

Thunder: 0

Fog: 2

Fog at 0900: 0

Add 20mbar to graphed pressure.

Some maxima over-recorded, these have been adjusted in the stats but still show on the graphs above.

[Stargazer]

My April 2010 stats from central Reading...

Mean maximum 16.0

Mean minimum 5.1

Mean temperature for the month 10.5

Highest maximum 21.8 (April 28)

Lowest maximum 10.2 (1)

Highest minimum 10.8 (29)

Lowest minimum 1.0 (17)

Air frosts 0

Days thunder heard 0

No snow observed during the month.

A drier and sunnnier than average month with unusually high maxima and night time minima close to average. A changeable spell at the start of the month with showers, then plenty of fine days and cool nights with several ground frosts. Remaining mainly dry with some very warm days in the last week of the month but becoming showery again at the end.

[Optimus Prime]

A very mild month. Near normal first half but a remarkably mild second half;

Mean Max 15.5c (+2.6c)

Mean Min 4.0c (-0.2c)

9.7c (+1.2c)

Mean maximum was particularily high. Last 7 years by maximum and minimum;

2009;

Mean Max 15.8c (+2.9c)

Mean Min 4.8c (+0.6c)

Mean; 10.3c ( +1.7c)

2008;

Mean Max; 13.6c (+0.7c)

Mean Min 3.7c (-0.5c)

Mean 8.6c (+0.1c)

2007;

Mean Max; 18.8c (+6.0c)

Mean Min 6.1c (+1.9c)

Mean 12.5c (+3.9c)

2006;

Mean Max; 14.0c (+1.1c)

Mean Min; 5.0c (+0.8c)

Mean; 9.5c (+1.0c)

2005;

Mean Max; 15.0c (+2.1c)

Mean Min; 4.3c (+0.1c)

Mean; 9.6c (+1.1c)

2004;

Mean Max; 14.9c (+2.0c)

Mean Min; 4.7c (+0.5c)

Mean; 9.8 (+1.2c)

The rise in Aprils temperatures far succeeds any other month (after the cold January and February) The last 7 years have averaged a 2.4c increase on mean maximum temperature! (mainly due to 2007s mind blowing figure)

[Osbourne One-Nil]

Average daily maximum; 13.0C

Highest daily maximum; 20.3C (28th)

Lowest daily maximum; 7.3C (2nd)

Average daily minimum; 2.7C

Highest daily minimum; 9.8C (28th)

Lowest daily minimum; -2.0C (21st)

Mean temperature; 7.9C (12yr mean 7.7C)

Total number of air frosts; 5

Total rainfall; 27.6mm

Wettest day; 15.2mm (5th)

Number of wet days; five

Highest wind gust 47mph (5th)

[Terminal Moraine]

Mean daily max; 12.0c ( +2.4c )

Mean daily min; 3.9c ( +0.6c )

Mean temp'; 7.9c ( +1.5c )

Highest max'; 17.4c ( 28th )

Lowest max; 6.4c ( 1st )

Lowest min ; -0.7c ( 21st )

Highest min; 9.0c ( 29th )

Rainfall; 34.2mm ( 48% )

Wettest Day; 11.4mm ( 30th )

Rain Days; ( 0.2 mm or more ) 11

Sunshine; 147.5 hrs ( 118% )

Sunniest Day; 12.4 hrs ( 22nd )

Air Frosts; 2

Ground Frost; 8

Snow/sleet falling; 1

Snow lying at 0900 g.m.t; 1

[RichardR]

Buxton, Derbyshire, England

April 2010 Climatic Records

Latitude 53*N Longitude 1.5*W Elevation 338m/1110ft AMSL

Valid 1st- 30th April, 2010

Mean Maximum: 12.33°C / 54.2°F

Mean Minimum: 3.1°C / 37.6°F

Mean Temperature: 7.5°C / 45.5°F

Highest Temperature: 18.9°C / 66°F (10th)

Lowest Temperature: -2.5°C / 27.5°F (22nd)

Mean Dewpoint: -5°C / 23°F

---------------------

Lowest Maximum: 5.3°C / 41.5°F (1st)

Highest Minimum: 9.4°C / 48.9°F (29th)

---------------------

Precipitation: 37mm/1.46"

Days with rain >1mm: 7

Days with rain: 13

Most in one day: 11mm/0.43" (30th)

---------------------

Mean Pressure: 1018.4mb

Max Pressure: 1034mb (9th, 10th)

Min Pressure: 999mb (2nd, 3rd)

Average Maximum Wind Gust: 28mph

Maximum Wind Gust: 48mph (1st, 20th)

---------------------

Sunshine hours: 145.13

Most in one day: 12.57hrs (21st)

Average per day: 4.84hrs

Sunless days: 2

% of Max Poss: 35%

---------------------

Days with Sleet/Snow: 1 (1st)

Days with Fog: NA

Nights below freezing: 2 (21st, 22nd)

Days with Hail/Ice Pellets: 1 (4th)

Days thunder heard: 1 (25th)

[Andy Bown]

For Warminster, Wiltshire

Average max = 15.76c (Highest = 21.9c on 28 April)

Average min = 4.62c (Lowest = 1.0c on 8 April)

Mean = 10.16c

Dry days = 23

Precipitation days = 7 (wintry = 1)

Rainfall = 44.5mm (32.5mm in the first 3 days!)

A run of mild nights in the last week made an increase of approx 0.7c on the mean that seemed likely until the 24th!

[NorthantsSnow]

It was the second driest April in Northamptonshire since 1984, beaten only by April 2007 which saw just 1.6mm precipitation.

[TonyH]

It was the second driest April in Northamptonshire since 1984, beaten only by April 2007 which saw just 1.6mm precipitation.

Was it? How much did you get? Just up the way 39mm in Coventry, which was totally unremarkable.

[johnholmes]

from 1600 on 28 April the main Davis data input was lost due pc problems but basic data was still logged from the other input. Temps in this period to whole C not 0.1C

long term averages, approx 60 years in brackets

Mean temp=9.9C (8.3)

Avge Max=15.4C (12.6) warmest day on 29th with 21.0C; coldest 8.8C on 19th

Avge Min=4.4 C (3.9) coldest night was 22nd with -0.6C and the warmest was 11.0C on 29th.

see note above about temperatures

Days of rain, 0.2mm or more=7

days with 1.0mm or more=5

total rainfall=15.4mm (40.5mm), with the wettest day being 29th with 7.6mm.

(Note:- rainfall is not anywhere near Met O acceptablility due very sheltered aspect: add approx 25% seems to be give about the right value when comparing with sites within 2-3 miles)

No snow, or fog or thunder, 1 air frost and 4 ground frosts(4 and 11)

Overall a return to above average values this month in temperature, especially daytime values, also a dry month.

[NorthantsSnow]

Was it? How much did you get? Just up the way 39mm in Coventry, which was totally unremarkable.

Only 12.4mm, just 28% of the monthly mean.

Surprised you had over triple that in Coventry.

Edited May 8, 2010 by NorthantsSnow

[Evening thunder]

April 2010 weather stats for the small village of Harpford, in the Otter Valley, East Devon

A very sunny and dry month overall with virtually all the rain falling at the beginning and the end of the month with a 21 day spell with only 0.6mm of rain from the 8th to the 29th. A nearby station that has been recording sunshine amounts since 2006 say this was the sunniest month in their record so far, with 256 hours of sunshine and 62% of the maximum possible amount of sun.

Temperatures were about average overall with no unusually warm or cold weather, although quite large daily variations in temperature were common with a diurnal range of 15-17°C on some days and 6 slight air frosts. We were generally kept a bit cooler on days where parts of the country were approaching 20°C slightly higher due to the onshore southerly wind off the English Channel which is a few miles away.

Highest max: 17.4°C, 63.4°F (26th April)

Lowest max: 10.3°C, 50.5°F (4th April)

Highest min: 7.4°C, 45.3°F (6th + 25th April) (time period on the weather station is midnight to midnight, however there was an overnight low of 9.2°C overnight from the 24th - 25th, which was in the evening of the 24th.)

Lowest min: -1.6°C, 29.1°F (21st April)

Highest daily mean: 12.4°C, 54.4°F (26th April)

Lowest daily mean: 5.5°C, 41.9°F (1st April)

Mean max: 13.9°C, 57.0°F

Mean min: 2.6°C, 36.7°F

Mean: 8.4°C, 47.2°F (about average)

Wettest day: 10.4mm (2nd April)

Monthly total: 30.4mm (approximately 24.4mm below average)

Average wind speed: 3.6mph

Max gust: 33mph (2nd April)

Mins below 0°C: 6

temperature and daily rainfall graph for April 2010:

Edited May 8, 2010 by StormMad26