本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 7 k$ O' k ?: A( ^' ]8 U
+ F% t" T/ u5 v1 H7 y& Q4 x7 l6 }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.8 C0 b- y+ I5 F" w
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.2 e9 _+ `! W( I u& A