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。
& z) Z- W% k, q( z0 @& H" NA 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.

+ Q0 ~8 A& X+ W* C$ BAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.

DELTA