Gales across the British Isles 1871-2014

XMETMAN on Gale frequency over time in Britain

gale frequency UK time series

“As you can see there is no doubt that winters [DJF] are slowly getting windier. The trend on the mean gale index is clearly 1.5 higher now than it was 143 years ago, over that time period the moving average shows a slight lull in proceedings between the 1940’s and 1970’s, but it peaked again around 1990, and although the centred moving average as fallen below the trend again last winter produced a record number of 10 days with a gale index of 50 or more. The winter [DJF] of 2013/14 also produced the highest mean gale index of 32.8 which is significantly higher than 1974 and 1989, who were joint second in the rankings with 30.5. “

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