本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 6 X8 [0 n i0 c& s# e3 r
. f- i5 Q) h( ?; nA 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.# h! U3 d1 X9 Y
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. ( S# S$ W J l' @1 _