本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 9 e4 H2 ~1 F" t8 b7 x* {9 h& {2 y2 n/ ?8 @+ l& g% Z
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.. Q' p4 e5 L4 A8 c" j9 D; f+ I/ O
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.* X K7 p1 u! S6 E