helm windとは 意味・読み方・使い方

The Helm Wind is a named wind in Cumbria, England, a north-easterly wind which blows down the south-west slope of the Cross Fell escarpment. It is the only named wind in the British Isles. It may take its name from the helmet or cap of cloud which forms above Cross Fell, known as the Helm Bar, since a line of clouds over the fells can predict and accompany a Helm. It is a local example of the strong foehn winds that can blow down-slope in the lee of mountain barriers.