本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 , I `/ B- L$ s* J% N0 r& M9 ^! f( I& Q6 ^% u/ K
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. : D* f* s" [# ~- o5 p! t+ C- eAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. 4 r# i) Z9 E/ L+ K& p