本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 , z4 T9 z! U' I0 h : f1 f S8 q0 y" E' @0 `A very cold Arctic airmass and winds of 15 to 20 km/h will generate wind chill values below minus 40 across much of Alberta tonight. Conditions will improve somewhat by Sunday afternoon as temperatures rise.4 C3 r# @3 P. X s0 @: W
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. ; E% ?& L3 I- ~& | U# R