Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

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Last Map Update: Tue, Jun 16, 2026 at 4:54:18 pm MDT

Watches, Warnings & Advisories

National Weather Service Great Falls, MT

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Severe Thunderstorm Warning

Severe Weather Statement

High Wind Warning

Red Flag Warning

Lake Wind Advisory

Wind Advisory

Special Weather Statement

Hazardous Weather Outlook

Thunderstorms This Evening

Lake Wind Advisory

Thunderstorms will begin late this afternoon with isolated storms becoming severe. Strong winds will be the biggest threat, accompanied by hail and dangerous lightning. Stay aware of any warnings that may be issued and have a plan to seek shelter if severe weather approaches your area.

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Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

NWS Forecast Office Glasgow, MT