本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 . F4 O0 C. s: @+ U% K1 ? C( h
" @& k" z- N; G" c, J# [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.! F0 S9 V* K8 D8 R
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.1 m" T, C+ |! z