请密切关注天气情况,做足保暖措施,防止冻伤。! P2 G7 K) d/ g# D7 N2 B
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# V6 Z# ^7 x( J
( h9 k- Q' `1 j& {# KAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.