本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 3 Z+ ^5 W' P' w; v z6 O% Y. x$ G
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.7 M! U1 [5 k, S) H, Y
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.; P% n8 h! A0 \) j