本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 7 V- f5 _/ L6 u8 |5 @' m+ v3 S K2 H1 g7 F
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 _- J, m$ [! Y' C
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. * g% z% S8 h5 g. b& m