本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 3 |' _, Z. O9 @4 a2 D- S+ Q' Z$ q% E+ G- R
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. + U6 }' E" Y5 U) W$ c4 @) mAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.1 L& A; P" Y' r& `, r5 g