请密切关注天气情况,做足保暖措施,防止冻伤。, B3 p8 p( L* |2 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.' V4 g' s4 C. u0 P; }
: I9 B- [6 u; G5 G5 R2 WAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.