请密切关注天气情况,做足保暖措施,防止冻伤。$ i# m0 T$ s6 w( v- h$ x
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.9 V! p1 g N$ P: X O8 ~" [+ A
3 g- w. A# I& a+ YAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.