本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 * Y. ?+ I. q$ ?2 |7 ^" m5 z
2 D) v. S, O# U. Q8 o. E U, iA 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.% q- C7 c5 f; h3 M
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.4 G" n! \6 X! W* S A