Severe Flood ● Closed
Flood Watch issued September 6 at 9:51AM MDT until September 8 at 12:00PM MDT by NWS Missoula MT, United States of America
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* WHAT...Flooding caused by excessive rainfall is possible.
* WHERE...Portions of northwest and west central Montana, including
the following areas, in northwest Montana, Flathead/Mission Valleys
and West Glacier Region. In west central Montana, Potomac/Seeley
Lake Region.
* WHEN...From 3 PM MDT this afternoon through Tuesday morning.
* IMPACTS...Excessive runoff may result in flooding of creeks,
streams, and other low-lying and flood-prone locations. Creeks and
streams may rise out of their banks. Flooding may occur in poor
drainage and urban areas.
* ADDITIONAL DETAILS...
- Thunderstorms capable of rainfall rates of 0.75" to 1.00" per
hour are possible this afternoon and evening (Sept 6), which
could lead to localized debris flows.
This period will then be followed by prolonged moderate to heavy
rainfall Monday into Tuesday morning of an additional 1 to 3
inches in the valleys, with 2 to 4 inches in the higher terrain,
especially along the Continental Divide and in Glacier National
Park.
- https://www.weather.gov/mso/hydrology
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | West Glacier Region; Flathead/Mission Valleys; Potomac/Seeley Lake Region |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Future |
| Cap Certainty | Possible |
| Cap Expires | 2026-09-08T12:00:00-06:00 |
Official source
Warnings courtesy of the issuing national meteorological service, via the WMO Alert Hub.
This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.
Severity as published by WMO Alert Hub (national weather services).
View original reportThis event as JSON · API and licence
Source updated 43 days ago (Sep 6, 2026 15:52 UTC) · we last heard from WMO Alert Hub (national weather services) 40 seconds ago
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About this location
The agency did not publish coordinates for this warning. The pin is the centre of the country, not the location of the event — read the area name, not the map, for where it applies.
Area as the agency stated it: West Glacier Region; Flathead/Mission Valleys; Potomac/Seeley Lake Region
Official authorities in United States
If you are there, these are the bodies whose instructions apply. This site is not an emergency service and does not issue warnings.
More for United States →What to do
Follow the instructions issued by WMO Alert Hub (national weather services) and your local emergency services. The guidance below is background.
Flood preparation, evacuation decisions, and the dangers of driving or walking through floodwater.
Open Flood Safety Guide →Earlier flood events in United States
Severe and extreme events of the same kind, before this one. Listed for scale, not because they are connected to it.
Nearby & related events
Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.