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Fog will impact travel through weekend

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Strong high pressure will continue to build into western Montana, bringing fog formation and travels impacts to the region.

The high pressure will create two scenarios for NBC Montana.

The first is for the valley west of the divide, from the Bitterroot and Missoula Valleys north to the Flathead Valley. Inversions will strengthen. This means cold air will be trapped in the valleys. Moisture in the air will condense, forming locally dense fog. Eventually a layer of stratus clouds will develop in some areas. Lows in the upper 10s to around 20 with highs remaining in the 20s.

The second is for southwest Montana and areas east of the divide. While there will be a chance for some fog formation, the area will experience a gradual warming trend with clear to partly cloudy skies. Lows in the single digits in Butte and the 10s in Bozeman. Highs in the lower 30s Thursday warming to the lower 40s Friday through the weekend in the Bozeman area. Highs will remain in the 30s in Butte.

Little change is expected next week, so this will be a prolonged dry and very quiet weather pattern.

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