本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 + N1 R4 D! l6 I _$ d4 t8 B4 A# Z5 S; S" h$ M) p
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.( a' n% _0 m9 `+ u, N
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.2 L5 \$ B9 h; x# P$ J# }: h( t1 Y