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Montana Flood Stories

191 first-hand accounts of flood events in Montana, ranked by impact. Each is a NOAA-written narrative of the moment.

Flood$225K damage

Rosebud, MT · May 21, 2011

A Pacific low moved into the four corners region on the 17th and migrated northeast into the Dakotas through the 22nd, bringing another round of heavy precipitation aided by a tap of Gulf of Mexico moisture.

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Flood$30K damage

Ravalli, MT · Jun 13, 2017

A closed low pressure system brought widespread heavy precipitation amounts of 1-3��� across portions of western Montana. The combination of heavy rain and continued high elevation snow melt caused rapid rises on small streams and creeks, especially around Georgetown…

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Flash Flood$7.0M damage

Flathead, MT · Nov 5, 2006

Unprecidented heavy rains caused catastrophic flooding in Glacier National Park. Going to the Sun Road was washed out in several areas with several bridges washing out as well. Many Glacier Hotel was flooded. The Associated Press reported $7 million in damages.

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Flood$16K damage

Ravalli, MT · Mar 6, 2014

A period of very warm temperatures ranging from 50 to 60 degrees occurred after an above normal snowfall winter across western Montana. This combined with moderate to heavy rainfall and high snow levels resulted in a quick melt of snowpack in various locations.

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Flood$130K damage

Park, MT · May 24, 2011

A Pacific low moved into the four corners region on the 17th and migrated northeast into the Dakotas through the 22nd, bringing another round of heavy precipitation aided by a tap of Gulf of Mexico moisture.

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Flood$120K damage

Powder River, MT · May 23, 2011

A Pacific low moved into the four corners region on the 17th and migrated northeast into the Dakotas through the 22nd, bringing another round of heavy precipitation aided by a tap of Gulf of Mexico moisture.

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Flood$200K damage

Flathead/mission Valleys, MT · Mar 11, 1996

A rapid warming of temperatures, after an extended cold, snowy period, caused ice jams and flooding problems across north central Montana. Many small streams went out of their banks, washing out numerous roads.

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Flood$130K damage

Custer, MT · May 25, 2010

Heavy rains on the 24th and 25th caused widespread low land flooding across rural Custer County, mainly south of Miles City. Heavy rainfall also caused numerous roads and culverts to wash out in Custer County.

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Flood$50K damage

Golden Valley, MT · May 23, 2011

A Pacific low moved into the four corners region on the 17th and migrated northeast into the Dakotas through the 22nd, bringing another round of heavy precipitation aided by a tap of Gulf of Mexico moisture.

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Flash Flood

Cascade, MT · Jul 31, 2025

An upper-level shortwave combined with monsoon moisture brought a few severe thunderstorms and localized areas of heavy rainfall to North-Central MT. This resulted in isolated large hail, flooding, and a landspout.

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Flash Flood

Blaine, MT · Jul 27, 2025

A persistent troughing pattern brought in good instability and shear to produce severe thunderstorms across the region over the 3 day time frame with strong winds as the primary hazard. There was also isolated large hail.

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Flood

Jefferson, MT · Jul 29, 2025

A persistent troughing pattern brought in good instability and shear to produce severe thunderstorms across the region over the 3 day time frame with strong winds as the primary hazard. There was also isolated large hail.

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Flood

Hill, MT · Jul 27, 2025

A persistent troughing pattern brought in good instability and shear to produce severe thunderstorms across the region over the 3 day time frame with strong winds as the primary hazard. There was also isolated large hail.

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Flood

Sanders, MT · Mar 7, 2014

A period of very warm temperatures ranging from 50 to 60 degrees occurred after an above normal snowfall winter across western Montana. This combined with moderate to heavy rainfall and high snow levels resulted in a quick melt of snowpack in various locations.

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Flood$75K damage

Richland, MT · Mar 16, 2003

Ice jams on the Yellowstone River between March 16th-18th caused flooding of low lying areas. The flooding caused some minor damage in Prairie and Dawson Counties.

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Flood$69K damage

Upper Clark Fork Valley, MT · May 1, 1997

Snowmelt flooding caused numerous road closures and road washouts throughout the region. In Flathead County, at least three road washouts were reported and one bridge damaged.

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Flood$280K damage

Richland, MT · Mar 20, 1997

After a winter with record setting cold and snow, the rapid snow melt caused the Yellowstone River to rise to flood stage. Many ice jams developed causing low land flooding. While two homes were evacuated, no damage to homes was reported.

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Flash Flood$50K damage

Valley, MT · Jun 16, 2007

During the late afternoon and evening of June 16, 2007, a high precipitation supercell thunderstorm tracked from across northern Montana, just to the north of a warm front.

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Flood

Blaine, MT · Sep 18, 2024

A closed upper low over the Great Basin and vicinity shifted northeastward toward the region while it spawned a surface low across eastern MT.

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Flood$60K damage

Ravalli, MT · Nov 7, 2006

Heavy rain on top of snow pack caused small streams to over top their banks in Lincoln, Sanders and Ravalli Counties. Rainfall totals over a two day period ranged from 2 to 3 inches in the valleys and 6 to 7 inches in the mountains.

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Flood$33K damage

Missoula / Bitterroot Valleys, MT · Feb 7, 1996

Warmer temperatures, after an extended cold and snowy period, caused numerous flooding problems across central Montana during the second week of February. Snowmelt over frozen ground caused streams and rivers to go out of their banks, washing out roads and bridges.

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Flash Flood

Meagher, MT · Jun 10, 2023

Several rounds of rain and thunderstorms affected much of Montana during the first half of June. Flash flooding occurred across portions of the region, especially across Fergus County as well as the Rocky Mountains.

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Flash Flood

Lewis And Clark, MT · Jun 10, 2023

Several rounds of rain and thunderstorms affected much of Montana during the first half of June. Flash flooding occurred across portions of the region, especially across Fergus County as well as the Rocky Mountains.

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Flood

Lewis And Clark, MT · Jun 8, 2023

Several rounds of rain and thunderstorms affected much of Montana during the first half of June. Flash flooding occurred across portions of the region, especially across Fergus County as well as the Rocky Mountains.

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