请密切关注天气情况,做足保暖措施,防止冻伤。0 D$ _) W8 a3 ~' y& L/ I u$ E
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.% V5 L6 b9 M- ]8 L
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At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.