本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 9 s' |5 B. o; Y( b, U; b7 E! f1 ]3 h. U0 o7 \
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.4 X( L( `3 s& N0 `4 u* {/ k( |
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.3 X' F1 t$ i1 M' F* W D