本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 - \ Q; @5 p* G6 d* z) h5 v6 F' J) h' g9 T7 K+ r8 l) J
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.0 e8 o5 N% y2 q A- p4 P/ z- F
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. " X: p) H% d3 Q g$ D; j' h: M