请密切关注天气情况,做足保暖措施,防止冻伤。2 {) [9 W H3 J$ U* m3 G: ]$ h* D0 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.; k6 r* L: L b: F
$ Z& s1 b' H( F, c2 e; l7 o' H
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.