请密切关注天气情况,做足保暖措施,防止冻伤。$ }) X% t5 u5 ~4 i: }- o# Y) M
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. ; [* U4 G3 `4 l# Y# x v. v% b0 y0 a, [$ ^/ o2 w
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.