Flash Flood in Valley County, Idaho
Flash Flood August 22, 2003 · Valley County, Idaho
What the National Weather Service wrote
Heavy rain washed out the road to Thunder Mountain on the east side of Monumental Summit.
The wider storm
A very moist upper level trough moved eastward from California into southern Idaho during the aftenoon and evening. This system spawned numerous severe thunderstorms and wide spread heavy rain which caused flash flooding mainly in the mountains.
Source: NOAA Storm Events Database, event 5374634. Narratives are written by the National Weather Service forecast office that issued the report.
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