本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 4 T; F x e: H! E* _$ a
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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.8 i/ _# s0 u& W8 I: K! ?
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.$ r, l( Y" ?% g4 [5 |1 i, ?) |7 n