本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 7 W- o3 B6 Y/ k/ H+ Q. Y; s+ G2 j
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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.1 d- A$ [' G- \9 b3 B
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. ) o% A; v' a& e/ _