本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 : b8 v0 {8 B( o5 p# C; z$ N7 W
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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.7 ^% x3 o. h/ B3 q
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.2 ?# v) Y! ^1 [; r1 s$ F