本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 ; y# Y/ [7 ^8 D2 h+ B
: U n( f7 O% H7 u7 w9 T( n( C
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 K8 I2 Q( X E/ A/ o( vAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. r! j1 U- c% }0 _; K$ m