请密切关注天气情况,做足保暖措施,防止冻伤。3 Z6 ?4 c' J& S2 X, N* e. @7 f
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. . j; n) s- l. Q$ K: {; C . x' K( F2 k& [% uAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.