Heavy Rain in Powell County, Montana

Heavy Rain August 15, 2014 · Powell County, Montana

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

What the National Weather Service wrote

A trained spotter measured 0.80 of rainfall in 20 minutes due to a thunderstorm.

The wider storm

Several upper level waves moved from south to north during the day around an upper level low that was centered between central Washington and Oregon. One of these impulses initiated thunderstorms across southwest Montana and brought hail and heavy rainfall especially to the Interstate 90 corridor between Garrison and Butte.

Began near Deer Lodge (46.4000, -112.7410).

Source: NOAA Storm Events Database, event 538605. Narratives are written by the National Weather Service forecast office that issued the report.

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