本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 - H- w( l [3 B+ O
: E# I0 a- H: w* H! I- C' cA 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. . \2 J% ~" r! T( d& C' @" cAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.; e1 y6 @# `4 g# @3 {2 u