本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 9 B( R3 [) U) X/ H' ~( ]9 V% [* u3 a3 {
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% T, W/ Q* M- Q9 TAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. 1 I9 Z, I$ {$ ^4 Z7 W5 j( ~