Our mild spell is just about over. Cold arctic air pooling over the central part of the country will slide across the Great Lakes and into Quebec by late Thursday. A shot of steady snow along the arctic boundary will cross the area during the daylight hours Thursday, with a general 5-10cm of snow along with gusty southwest winds and blowing snow. Behind the front, temperatures will plunge to -20C in Montreal and Ottawa by Friday night and "warm" only to -14C for Saturday.
Meanwhile to our south from Arizona to Tennessee and especially Oklahoma and Arkansas, a strong winter storm will tap into the arctic air and Gulf of Mexico moisture, and produce a major winter storm across that area. FEMA is already sending supplies and generators into Oklahoma in anticipation of heavy accumulations of ice. They are expecting power outages that could last several days. Watches and warnings have been posted.
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