本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 - }" K, {8 u- j: q $ X8 u# y* t# `8 H& c/ JA 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.2 U5 ~8 [& w7 R$ W/ P- ]0 w* s
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. 1 T/ N) _. o& Y, j' N9 [8 w