请密切关注天气情况,做足保暖措施,防止冻伤。9 j7 w6 K+ b0 ~: v
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. 0 o# o# i% f/ n$ c) p7 D- X; A. N9 ^7 l) `$ }: w3 v6 }) n3 ]! Y) L+ P
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.