本帖最后由 qfweiwei 于 2014-3-1 22:08 编辑 # B! E. ^1 _) s/ d7 e8 v3 u' _# H- S3 `
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.+ h9 x8 {% L$ z! O2 h' Y* n- e
At these extreme wind chill values frostbite on exposed skin may occur in less than 10 minutes.4 I T: |8 Q, M% j# }! U; F