本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 & H; W; o' ^" h. I# N; P0 L5 ]9 B ~# q
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.8 _7 m# P4 G5 w4 x% A6 T& N$ E
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes., r8 }* C" I3 L; d* u1 m0 K1 r. {