本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 + p. Z+ V, {6 H/ v# t% u0 o5 @, ~5 H
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.; b. r! I, X/ n$ Z5 q" K2 W3 p: I
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. 5 S, ` x4 `4 S. k: F