本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 8 ~. T" A( `) o S M- S$ t G: Q# G2 ?1 H. ^* a4 d3 g9 }+ 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. k2 \4 {- o- u/ b1 f
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes. % Z/ Z/ F9 P! s# \# _7 B; B' E