本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 * w; o; u1 e* ^9 a' b5 h. x7 y+ L0 K/ }! v0 t2 F' H, Y
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 ?/ u5 [- V9 ~. T: A% y' H* |! s
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. & B. z0 O* ^6 Q, h