本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 4 l% H n$ k' Z! I) {' q+ o3 U; C' u8 X
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.4 G3 y% Q$ u' ?. p3 c: ?
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. : G+ Z, q- a) O7 G