本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 $ |3 I: m' Y( s ~# F7 R5 K" B! g 4 I5 G, Q: M& d/ l7 hA 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.+ |# m; v* l# @. q& }; J
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.3 u) {) F* }( ~