Saturday, April 30, 2011

Lookback: March Lookback - Sunny and very dry, Apr 05 - 07:12

Mean maximum temperature for March ranged from 12.5°C at Otterbourne, near Winchester, to 6.4°C at Lerwick on Shetland, while mean minimum temperature varied between 7.0°C at St Mary's, Isles of Scilly, and -0.4°C at Katesbridge, Co Down. The mean maximum temperature was 1.0-1.5°C above the long-term average in eastern, central and southern parts of England, while the mean minimum temperature was 0.0-1.0°C below the long-term normal in all regions. The Central England Temperature of 7.0°C was 0.6°C above the average, and in the last 100 years 28 Marches were warmer while 72 were colder.

The highest individual maximum in the UK was 19.6°C at Chivenor, north Devon, and at Charlwood (Surrey) on the 25th, while the lowest minimum was -7.5°C at Braemar, Aberdeenshire, early on the 18th. The lowest daytime maximum was -0.5°C at Dalwhinnie, Inverness-shire, on the 12th, and the warmest night was that of the 30th/31st with a minimum of 11.1°C at St Mary's, Isles of Scilly.

Rainfall averaged over England and Wales during March was 26mm which is 35 per cent of the average for the standard reference period 1971-2000, the lowest in March since 1990; in the last 100 years only nine Marches were drier while 91 were wetter. The equivalent figures for Scotland were 79mm and 116 per cent of the normal amount, and for Northern Ireland 41mm and 65 per cent. Monthly totals at routinely-available sites ranged from 184mm at Kinlochewe (Wester Ross) to just 2mm at Cambridge, and less tha 5mm of rain was recorded over a wide area extending from Hertfordshire and Oxfordshire in the south to North Yorkshire in the north.

Sunshine averaged over England and Wales during March totalled 152 hours which is 134 per cent of the 1971-2000 mean; in the last 100 years only 12 Marches were sunnier while 88 were duller. The equivalent figures for Scotland were 107 hours and 103 per cent, and for Northern Ireland 144 hours and 127 per cent. Largest total in the UK was 199 hours at Weymouth (Dorset) and the smallest was 62 hours at Kirkwall (Orkney).

© Philip Eden


Source: http://feeds.weatheronline.co.uk/~r/weatheronline/~3/zlGzeKISyZ4/reports

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