请密切关注天气情况,做足保暖措施,防止冻伤。 ' \2 O( o$ n3 J1 ^ }- s1 FA 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! l
- h$ x* ~: z* P. }' ZAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.