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。
% a/ l' S; B# t4 ?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.
  q5 O+ L+ l* u; A/ A, ~
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.

DELTA