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Weather Wise: What's a Chinook Arch?

Posted: 8:43 PM, Oct 21, 2019
Updated: 2019-10-22 12:49:12-04

At this time of year as Montana descends into fall, the jet stream descends down from Canada into the northern United States.

In this week's Weather Wise, the shift creates a unique opportunity for rare cloud formations here in Montana that do not occur many other places in the world.