本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 5 }$ P- E0 f) r+ c- u9 @3 [7 |9 H4 m7 L
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.6 y4 ]8 O. V( G _
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. , G( s: N$ }2 a5 ]8 c