Cold snaps are not unheard of but the distinctive aspect of this one is its sheer persistence — due to a highly unusual “blocking high” over Greenland, according to forecaster Robin Steel from Meteogroup.
“The main reason is that we have a large blocking high over Greenland and Iceland which means it keeps the winds across Northern Ireland and the UK in the north and north-easterly direction,” he says.
“The weather system has been stuck that way for a number of weeks now, it’s very unusual. If the wind would come in from the west, it would warm things up but it can’t get in.”
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