本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 m; n" j& v5 n" o+ d/ c# b7 @: n. \" ^! C7 @; w. S
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. , \9 e0 v+ d! ~/ `0 ?& gAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. ; S/ v. x7 p0 r3 D o