请密切关注天气情况,做足保暖措施,防止冻伤。. \1 _! Y; g% F$ G9 U
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.% E/ w2 }2 @7 n3 |$ H
# t2 n- ~* N, [9 G- j: E* \" e8 SAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.