本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 3 k/ Y: L4 f6 | v' } l0 ^6 h9 s# ~2 l# I& j U; 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.( t/ [+ g( e$ p" S3 h
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. ( ?+ x4 O- V; o1 b4 n4 f