本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 ) A7 Y5 d4 |0 X - M* a* `4 y% x2 _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 L+ R5 |' L) i5 o0 R
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. I; |0 O) u% @