Flash Flood — Sanders, Montana

2010-08-02 · near Camas, Sanders, Montana

Event narrative

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.

Wider weather episode

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.

View location on OpenStreetMap → (47.6133, -114.6798)

Source: NOAA Storm Events Database, event_id 258068. Narrative written by the NWS forecast office that issued the report.