本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 9 }4 L/ @/ w$ Y( Q( Y3 K$ r8 A7 T' L+ X; y; i. p' B. E
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.) l+ v3 ]6 R& F
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. 0 ^/ a( u- Q9 N0 |