本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 3 h( m7 i' t r, w& C
" B( ~7 B0 x- T* S3 ~; gA 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. & C# r, c Z& L6 c! rAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. , J" L/ I5 O) S6 P8 E