本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 , ]7 ^6 j$ V" x; U9 S 8 l- a) W( o/ g0 Z( a2 I( M) EA 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. 7 [9 u4 a! t5 k2 EAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. $ U1 e% t2 @2 j/ ]* D