Flood Watch

Locations Affected

King Arthur Park, MT ∙ Helena, MT ∙ The Silos, MT ∙ Churchill, MT ∙ White Sulphur Springs, MT ∙ East Helena, MT ∙ Toston, MT ∙ Bozeman Gallatin Field Airport, MT ∙ Helena Valley Northwest, MT ∙ Radersburg, MT

Full Alert Message

URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Great Falls MT 1039 AM MDT Fri Sep 18 2026 ...FLOOD WATCH IN EFFECT FROM 6 PM MDT THIS EVENING THROUGH SATURDAY AFTERNOON... * WHAT...Flooding caused by excessive rainfall is possible. * WHERE...The Canyon Ferry Area, Helena Valley, and Meagher County Valleys in Central Montana * WHEN...From 6 PM MDT this evening through Saturday afternoon. * IMPACTS...Excessive runoff may result in flooding of low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Showers and thunderstorms capable of producing hourly rainfall rates of between 0.25 inch to 0.5 inch are possible. - Some locations impacted include Helena, Townsend, and White Sulphur Springs - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

---