本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 ) i1 v; A) x6 A
/ T2 P" p. D2 D% W& C4 n( |8 H: KA 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.9 {, z$ t' W' f" ~4 d ?
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.) d$ N) }+ z5 B% M7 J