本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 1 n4 ~( M {% |6 K% k0 v6 E/ S9 p6 j2 T+ r6 Z0 h. {9 k8 Z8 K
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.5 a2 I @; D5 ^0 I9 o9 _
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. # Y! g+ U/ N _/ b1 w! P