Heavy Rain and Flash Flooding Threat in Montana; Severe Thunderstorms in the Middle Missouri Valley

A low pressure system will bring heavy to excessive rainfall and high winds across Montana this afternoon. Heavy rainfall totals may lead to scattered flash flooding concerns. A line of showers and strong to severe thunderstorms will move into the mid Missouri Valley region this afternoon producing severe winds and isolated large hail with stronger storms. Read More >

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Last Map Update: Wed, Sep 18, 2024 at 1:40:20 pm MDT

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Locally Heavy Rainfall Today

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A potent fall storm will bring widespread rain to much of north-central and southwest MT today with heaviest rainfall amounts focused across eastern portions of north-central MT, where some locations will see 2 inches or greater precipitation totals. Excessive rainfall amounts could lead to minor flooding, especially in low-lying and/or poorly drained areas. These is a 15% risk of flash flooding, primarily in isolated thunderstorms where more intense precipitation rates are possible. #MTwx

Gusty/strong winds develop today around a potent fall storm system tracking across MT. Highest wind gusts, in excess of 50 mph, will be focused across Judith Basin and Fergus counties with wind gusts locally exceeding 40-50 mph elsewhere across north-central MT. #MTwx