本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 " t# C1 w9 G1 u9 ]3 p$ j7 c6 W. q5 o+ y8 T
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.3 w* _0 n+ R, s5 N( E
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.% ?6 ]: v9 ~0 |2 }6 C6 Q; ?