Evadne
Well-Known Member
Friends, the blessed Roger Taylor has vouchsafed the following information - or at least how he uses the terms anyway:
Half gale = Force 7
Full gale = Force 8
Severe gale = Force 9
Storm = Force 10
Violent storm = Force 11
Hurricane = Force 12
(I had to promise him that all the members of the forum had undertaken to purchase his Mingming book in return for his reply - hope that's ok)
IIRC an increase of +1 in Beaufort force means a doubling of the force exerted by the wind, so that makes sense.