本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 2 @0 k5 j% c. G* a8 F9 O w, L- R3 p2 h0 ]; V
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. 2 c* v! M. B) h# O: V- G1 C7 I8 MAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. ; A2 a' `& O4 s