本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 4 s* Q" t9 ?; I5 I/ }6 O" e2 V+ Z% }( S. u8 r
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.1 G' m a a( f
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.! v* ~% {" s b- `3 @/ p3 `