本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 $ Z2 `! m2 L# d
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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." c# A, S+ \, J& W! W
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.$ i! @. t/ W% z9 E& j: I1 g3 e7 F& T