Montana Flood Warning - Severe | Effective 05/31/2026 18:42

Headline: 
Flood Warning issued May 31 at 7:42PM MDT until June 1 at 7:30PM MDT by NWS Missoula MT
Event: 
Flood Warning
Urgency: 
Expected
Effective: 
May 31, 2026 - 6:42pm
Expires: 
June 1, 2026 - 6:30pm
Description: 
* WHAT...Small stream flooding caused by excessive rainfall is expected. * WHERE...South Central Flathead County in northwestern Montana... Western Lake County in northwestern Montana... Small streams along the Mission and Swan mountain ranges. * WHEN...Until 730 PM MDT Monday. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. Streams continue to rise due to excess runoff from earlier rainfall. * ADDITIONAL DETAILS... - At 736 PM MDT, emergency management reported heavy rain in the warned area. Flooding is ongoing or expected to begin shortly. Between 1 and 3 inches of rain have fallen. - Additional rainfall amounts of 1 to 2 inches are possible in the warned area. - Some locations that will experience flooding include... Polson, Evergreen, Columbia Falls, Ronan, St. Ignatius, Pablo, Woods Bay, and Bigfork. - Small streams along the Mission and Swan mountain ranges. - https://www.weather.gov/mso/hydrology
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Area Description: 
Flathead, MT; Lake, MT; Sanders, MT
Forcast Office: 
NWS Missoula MT
Sender: 
w-nws.webmaster@noaa.gov