本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 : e6 P X+ ?" H2 H; L( a* h3 x) m2 S& ?% [! a2 R, s
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. ; h' Y/ j: c U5 E4 QAt these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.9 l8 s! n' o9 {7 W a) {6 ?0 z