本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 : o% {/ ~ W: m& P9 ^/ x U9 a' F) @: \+ ^+ ~# f" w4 J" L H1 l
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.$ y; j! T/ g$ C8 k
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.5 l$ {: m% i' b: d) G