Severe · Flood WatchActive alert

Flood Watch issued September 20 at 4:32AM MDT until September 20 at

Affecting Musselshell; Treasure; Northern Rosebud; Custer; Fallon; Powder River; Carter; Northern Big Horn; Southern Rosebud; Southern Big Horn; Bighorn Canyon; Pryor/Northern Bighorn Mountains; Northeastern Yellowstone; Southwestern Yellowstone; Northeast Bighorn Mountains; Sheridan Foothills

In effect until: Sep 21, 2026, 12:00 AM

Musselshell; Treasure; Northern Rosebud; Custer; Fallon; Powder River; Carter; Northern Big Horn; Southern Rosebud; Southern Big Horn; Bighorn Canyon; Pryor/Northern Bighorn Mountains; Northeastern Yellowstone; Southwestern Yellowstone; Northeast Bighorn Mountains; Sheridan Foothills

Possible impact zone; conditions develop through 12:00 AM.

Monitor the latest forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

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Read the original bulletin (official text)

Showers are turning light and tapering off along the western
foothills, but healthier showers will continue over central and
eastern portions of the forecast area today. The risk of flooding
continues.

* WHAT...Flooding caused by excessive rainfall is possible, along
with flash flooding over recent burn scars.

* WHERE...Southeast Montana and Sheridan County Wyoming.

* WHEN...Through this afternoon.

* IMPACTS...Excessive runoff may result in flooding of creeks and
other low-lying and flood-prone locations. Flooding may occur in
poor drainage and urban areas. The risk of flooding will diminish
late this afternoon and evening as showers taper off.

* ADDITIONAL DETAILS...
- The heaviest rainfall is slowly shifting eastward to southeast
Montana and northeast Wyoming.
- The Elk and McGhee-Remington burn scars are particularly
vulnerable to flash flooding and debris flows. Any other burn
scars from this summer will have elevated flash flood potential
as well.
- http://www.weather.gov/safety/flood

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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™

Flood Watch issued September 20 at 4:32AM MDT until September 20 at

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