Flash Flood in Sanders County, Montana

Flash Flood August 2, 2010 · Sanders County, Montana

$15K

Damage as recorded

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

A slow moving thunderstorm dropped rainfall amounts of 1.59 inches up to an estimated 3.25 inches in a one to two hour period. Twenty five homes were flooded from runoff. One home owner had half their yard washed away with a shed also flooded.

The wider storm

Strong thunderstorms developed across northwest Montana ahead of an approaching upper level trough. The main threat with these storms was heavy rain and some hail. In one case, the thunderstorm sat stationary for an hour and dumped heavy rain over Hot Springs. This led to flash flooding in the area.

Began near Camas (47.6133, -114.6798).

Source: NOAA Storm Events Database, event 258068. Narratives are written by the National Weather Service forecast office that issued the report.

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