Rockies, Plains Await Cold, Snow
Nick Wiltgen Updated 13 mins ago weather.com
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We've been talking about it for days – a polar plunge heading south of the border from Canada with chances for snow.
Now it's show time. Get the fireplace ready and break out the coats and sweaters.
Let's start with the easy part of the forecast – the temperatures.
Canadian Chiller
Turning Much Colder
The cold air made its first appearance in the Lower 48 late Tuesday, entering via Montana. Cut Bank, near the Canadian border, gusted to 55 mph with the initial push of colder air, and rain eventually changed to snow there.
It will be a long time before the cold air stops its southward march.
It's a pretty sharp Arctic front pushing in. During the heart of winter, we'd be talking subzero temperatures and bitterly cold wind chills.
But it is only early October, so we'll be talking temperatures struggling to crack 40 in parts of Big Sky country on Wednesday. That's still a huge change from the 70s and lower 80s observed there Tuesday.
Southward Bound
The blustery, chilly weather will continue to march southward for the rest of this week.
By Friday, highs in the 50s will be found as far south as Kansas City and St. Louis.
While the cold front will slow down as it drags farther south, it won't come to a complete stop. By Sunday highs in the 60s are possible all the way to the I-20 corridor in the Deep South, includingDallas and Birmingham.
Now, the more difficult part of the forecast.
Wednesday Forecast
Thursday Forecast
Montana, Wyoming Snowcast
Dakotas Snowcast
Snowy Questions
The initial blast of polar air is bringing snow from the front range of Montana's Rockies (includingGlacier National Park) into the adjacent plains and hills of central Montana, including Great Falls.
A few inches of accumulation are expected, especially over the colder higher terrain.
(MORE: Montana Weather Alerts)
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