请密切关注天气情况,做足保暖措施,防止冻伤。 ' K c4 `* Q- v$ S) VA 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. D7 t) L2 O& U# s( e. i
, p2 c7 U! ?: ^ P/ T7 hAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.