本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 6 n" m$ [4 v8 _' ^( Z% y; Q4 h 5 N& x2 X$ q2 uA 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.4 U! v8 X9 Z+ f0 P* Q
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. " H0 L7 \; S) N; S