本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 * Q2 t+ e* D# n+ V- {7 u9 V1 Z) g/ O1 p0 P: u
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.5 ^2 b! k# K% Y8 G% B
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. 6 F( F a9 p: P2 D. a- |. y/ x2 {% b3 n