Review of the UK weather in 2018 - Warm, sunny and somewhat eventful Ian Simpson Climate Data Scientist, Met Office
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Review of the UK weather in 2018 Warm, sunny and somewhat eventful Ian Simpson Climate Data Scientist, Met Office www.metoffice.gov.uk © Crown Copyright 2018, Met Office
UK Mean Temperature 2018 The UK mean was 9.5oC 0.6oC above 1981-2010 average 1.1oC above 1961-1990 average 7th warmest in a series from 1910 The mean Central England Temperature was 10.7oC 1.2oC above 1961-1990 average 4th warmest in a series from 1659
UK Maximum Temperature by Month The UK mean maximum temperature was 13.3oC 6th warmest in a series from 1910 0.8oC above the 1981-2010 average
UK Minimum Temperature by Month The UK mean minimum temperature was 5.7oC 0.5oC above the 1981-2010 average
UK daily mean temperature for spring 2018
It started with two exceptionally cold “Beasts from the East”,
but from mid-April onwards it was generally warm
Mean daily UK temperature for summer 2018 Equal warmest summer for the UK in a series from 1910 (alongside 1976, 2003 and 2006, and just ahead of 1995)
June-August 2018 mean sea level pressure
anomaly
More anticyclonic than
usual
Slightly more
“southerly” than usual
Jet stream deflected
north as it approached
Europe, hence below
average pressure in
Arctic
Higher global temperatures also contributed to the warmth HadCRUT4, June 1976 vs. June 2018. Similar anomaly patterns in both Junes, but 2018 much warmer globally
But fewer days above 25 oC than in 1976 and 1995
Highest temperature for summer 2018: 35.6 oC at Felsham
(Suffolk) on 27 July
UK Rainfall by Month UK rainfall for 2018 was 92% of the 1981-2010 average Driest relative to normal in Scotland N (83% of the average) For England, 2018 had the 3rd driest June in a series from 1910, and also the 7th wettest March.
UK Sunshine by Month UK sunshine for 2018 was 115% of the 1981-2010 average 2018 was the UK’s second sunniest year in a series from 1929, just behind 2003, and the sunniest for East Anglia. Summer 2018 was the 4th sunniest summer for the UK in this series, and May 2018 was the sunniest May.
The two “Beasts from the East”, February-March 2018 Snow depths at several sites from 27 February to 8 March 2018.
The two “Beasts from the East”, February-March
2018
Late February/early March
2018 - widespread
disruptive snowfalls.
49cm at St Athan (South
Glamorgan) and 46cm at
Bishopton (Glasgow).
17-18 March 2018, further
widespread snow,
especially over south
Wales and south-west
England
Maximum temperature anomalies for 1 March (left) and 18
March (right)2018 was a more active year for storms than 2017
Eleanor, 1-2 January
Fionn, 16 January
David (named by Meteo France), 18 January
Georgina, 24 January
Emma (named by Portuguese Met Service), 1 March
Hector, 13-14 June
Ali and Bronagh, 19-21 September
Callum, 11-13 October
Deirdre, 15-16 December
10 storms in total (8 named by Met Office). Emma coincided
with the first “Beast from the East”, resulting in major snowfall.
Somewhat unusual to get a named storm in June.
Deirdre associated with widespread freezing rain especially in
northern England.2018 was a more active year for storms than 2017 Storm Hector - a gale in summer! Gust to Storm Deirdre, freezing 74 mph at Orlock Head (County Down) rain
For more information please contact
www.metoffice.gov.uk
ian.simpson@metoffice.gov.uk
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