请密切关注天气情况,做足保暖措施,防止冻伤。 / X5 d. Q9 O4 t# O- ]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.. Y6 p; ~+ N0 Q& C# Z
2 N& z1 m: s* B6 V( O9 m5 }At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.