本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 7 Y' `7 T8 \% s : ?% I: f& ]: F$ \* ?* tA 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.5 u- ?7 q; k; @4 }4 s- _3 q
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. + G' t4 [6 S& U