本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 - i. I' N8 f5 j" U' G: u! u4 z' U. u' }- J
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.4 F; ~0 ?9 d; p; B$ @' n( J" N
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.8 j; K3 D$ {" e/ ]' @5 @. p. i