By Alex Sosnowski, Expert Senior Meteorologist
November 9,2014; 9:27PM,EST
As frigid air begins to push southward across the central United States this week, snow will continue to drop southward from Alberta, Canada, into the northern Rockies and northern High Plains through Monday.
After whitening Calgary and other parts of Canada, the storm will move on to affect parts of Montana and Wyoming with snow, plunging temperatures and dangerous travel conditions through Monday.
High winds will howl, causing blowing snow and white-out conditions in some areas.
Also spanning Monday and Tuesday, the storm will turn farther east and could affect some major cities in the Midwest or at least connecting highways with snow.
The swath from eastern Montana to southern North Dakota and northern South Dakota to central Minnesota is at greatest risk for substantial snow totaling 6 to 12 inches.
This zone encompasses Miles City, Montana, and Aberdeen, South Dakota.
This webcam photo from National Park Service captures the snowy scene in Glacier National Park from Apgar Mountain on Sunday morning, November 9, 2014.
Amounts will top a foot farther to the east from Minneapolis to the Upper Peninsula of Michigan and central Ontario.
A prolonged period of snow for these areas is the reason behind the heavier amounts.
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Portions of highways that may be impacted by snow and slippery travel in the Central states include interstates 25, 29, 35, 75, 80, 90 and 94.
The snow will initially melt as it falls on roads but is likely to create slushy and slippery conditions as temperatures tumble with advancing arctic air and the southward dip of the polar vortex.
Temperatures will plunge below freezing during and shortly after the storm. Parts of the northern Plains may experience temperatures dipping into the single digits and teens.
People can keep up to date on the developing snowstorm and the progress of the cold air by checking in at AccuWeather.com.
Travelers will want to make sure they and their vehicles are prepared for the snow and wintry temperatures.
As the second round of snow moves through the Midwest on Tuesday, additional snow will push over the northern Rockies.
Later in the week, another storm may bring a bit of snow to a part of the Northeast. Looking further ahead, AccuWeather.com meteorologists are also monitoring the possibility of a winter storm crossing the country with a swath of snow from the Northwest to the central Plains to the Northeast Thursday to the following Monday.
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