Flash Flood in Deer Lodge County, Montana

Flash Flood July 15, 2017 · Deer Lodge County, Montana

$685K

Damage as recorded

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

What the National Weather Service wrote

There were several reports of very heavy rainfall including one that came from the NWS COOP observer at the golf course: 0.75 of rain in 20 to 25 minutes. Multiple homes experienced flooded basements, man hole covers were lifted off and floated down roads, and Westhill Park road was flooded with a depth of up to 4 feet. The Old Works Golf Course in Anaconda reported the cost to repair flood damage to be $660,000.

The wider storm

An upper level wave tracked up from the Clearwater Mountains of Idaho towards the Seeley Lake area and initiated thunderstorms thanks to warmer than normal temperatures in the region. As these storms tracked over the Bitterroot and Clark Fork Valleys, they produced damaging winds and power outages. Also, a thunderstorm produced torrential rain and subsequent flash-flooding to Anaconda in southwestern Montana.

Began near Anaconda (46.1278, -112.9560).

Source: NOAA Storm Events Database, event 705265. Narratives are written by the National Weather Service forecast office that issued the report.

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