Flash Flood in Lemhi County, Idaho

Flash Flood August 13, 2014 · Lemhi County, Idaho

$500

Damage as recorded

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

What the National Weather Service wrote

About 20 ponderosa pine trees fell down onto the main Salmon River Road while one pine tree smashed the USGS river gauge on the Salmon River. Evidence revealed that debris flows occurred at Boulder Creek, Owl Creek, Colson Creek and at an unnamed gulch. The unnamed gulch produced a large debris flow with rock onto the main Salmon River Road. A man-made dam located near the delta of Colson Creek was damaged.

The wider storm

An upper level wave tracked from southern Idaho to western Montana initiating thunderstorm activity. Due to an above normal amount of atmospheric moisture, the embedded thunderstorms brought very heavy rainfall triggering debris flows across the Mustang burn scar west of Shoup.

Began near Shoup (45.3100, -114.5370).

Source: NOAA Storm Events Database, event 538416. Narratives are written by the National Weather Service forecast office that issued the report.

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