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Late-October Snowstorm to Lash Rockies, Plains

A storm will bring another dose of wind-driven snow to the northern and central Rockies, eastward to part of the Plains early next week, prior to Halloween.

The storm will ride a push of cold air moving out of Canada, which could slash temperatures by 20 to 40 degrees from one day to the next.

For a large part of Montana and Wyoming, part of northern Colorado and at least the western portions of Nebraska and the Dakotas, the snow and wind can be heavy enough to impact travel.

As temperatures plunge with the snow, roads can become slippery in a hurry with blowing and drifting snow causing poor visibility.

This is the same area that has been hit by two major snowfalls earlier in October.

Anyone who has plans on driving along portions of I-25, I-70, I-80 and I-90 from Wyoming and South Dakota to Colorado from Monday through Tuesday should keep an eye on the storm, which could produce blizzard conditions for a time. Snow would affect areas along I-15 and I-90 in Montana Sunday night into Monday.

If the storm develops to its full potential, some of the mountain ranges in the region could pick up a foot or two of snow with several inches fanning out eastward over the High Plains to the east.

There is also a chance of some snow sweeping farther south into portions of Kansas, Oklahoma, northern New Mexico and the northern Texas Panhandle.

Cities that could be hit with some snow from the storm include Billings, Mont.; Casper, Wyo.; Rapid City, S.D.; Scottsbluff, Neb.; and Denver. The day before the storm temperatures will be in the 60s and 70s, but the day of the snow temperatures may struggle to rise higher than the 30s with RealFeel® temperatures in the teens and lower 20s.

If the storm were to become very strong, a surge of warm air on its southeastern flank could bring an outbreak of severe weather to portions of the central and southern Plains.

The details of the storm, including its track and strength, snow and thunderstorms, will continue to unfold over this weekend.