本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 ' f! O& d' w2 z0 | & t0 A( y2 L4 C/ v7 ]& |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.$ T: a+ T" Z3 E
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. 2 e) |, e7 t& p/ F