Snowy And Increasingly Frigid Week Ahead For Canada/US

Written by Mark Vogan on December 2, 2013 in United States of America with 0 Comments

While we have some very cold air dropping south over western Canada, low pressure is pushing east which is producing heavy snow from Vancouver into the Prairies. The combination of low pressure which is driving in plenty of Pacific moisture and arctic air coming south will bring sizable snow totals even to such cities as Spokane, Great Falls, Billings, Williston, Bismarck down to Rapid City and Pierre as well as north of the border in Edmonton, Calgary, Regina and Saskatoon through tonight, tomorrow into Tuesday.

Here’s the AccuWeather graphic showing the snow for western Canada and the Northern Tier of the US.

Source: AccuWeather

Once the low pushes into southern Manitoba and Minnesota, so major arctic air drops south of the border.

Here’s the ECMWF surface chart by Wednesday and note the system is centred over the heart of the Northern Plains/Prairies while the cold drops south on the backside.

Courtesy/Owned by AccuWeather Pro

Here’s the Northwest snow totals according to TWC.

Source: weather.com

Here’s the Northern Plains snow totals according to TWC.

Source: weather.com

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By Thursday, temperatures are frigid over British Columbia, Alberta down into the Northwest and Rockies with highs struggling to reach 0F.

Courtesy/Owned by AccuWeather Pro

Check out these temperatures by 96 hours.

Courtesy/Owned by AccuWeather Pro

The 30-40 below normal temperatures will continue to drive south, southeast over the US, reaching South Texas late week and we could even see it snow in Dallas with night temperatures dropping below 20.

While snow is likely to fly across much of the Plains, Ohio Valley and eventually the East following some substantial warmth, so too will it turn bitter further and further east.

The 6-10 day looks very cold for much of the country.

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Will have more tomorrow.

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