本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 9 v& G' j% B0 v! B! @" A9 o. G ; D4 p! M" R4 R: K- P2 _* H: @5 VA 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 J" g: @) U& x+ h( G/ v
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.. t6 U4 u) ?; Y% g4 b) u