今晚和明晨要出门的朋友请注意Wind chill warning in effect.

qfweiwei

请密切关注天气情况，做足保暖措施，防止冻伤。
1 Y* |& e; V, ~$ T9 ~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* H, c+ R+ y( o: V
$ |' V1 y% B, h+ T7 UAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.

DELTA