请密切关注天气情况,做足保暖措施,防止冻伤。2 M( N8 M; J$ `5 ~, V$ ]" I) W
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.4 p' F3 y2 }/ y6 a
0 v; D; x) b4 P$ ?At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.