本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 % i: Z* h2 H9 S7 q# I# C7 l/ R# `) b/ v8 t' a3 b
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.) u! j; I5 _ s3 ~( h
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.8 B7 j+ h/ |4 g. M0 h; J, ?* Y4 Q5 Y4 {$ {