本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 : L6 A+ b" g+ |% }/ P. \% p# \0 V3 _: [4 T# c* 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.5 t0 u3 J; W1 ?& i: Y
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. , g: v& d. l/ [; w' ?; }* _; n