请密切关注天气情况,做足保暖措施,防止冻伤。 L6 h" n7 d; x, p2 N$ @9 i
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.: c- k5 `% B. u, X
: i0 g# F! A: i% U* K( KAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.