本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 ; h( U7 C) C5 h! q7 C
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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. # o4 d1 o& a3 ]9 ]5 g7 q" I* oAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.* I/ o' M& F) c s3 B