Heavy Rain in Lake County, Montana

Heavy Rain September 8, 2019 – September 9, 2019 · Lake County, Montana

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

What the National Weather Service wrote

General rainfall of 1 to 2 inches fell across parts of the Flathead and Mission valleys eastward to the Continental Divide. Heavier amounts of 3 to 4 inches fell locally on the east side of Flathead Lake and in the Mission Mountains, which were near record 2-day totals for the month of September. Also, minor debris flows were noted on Hwy 35 between Bigfork and Polson with some water into the Bigfork after-school building.

The wider storm

A large low pressure system that tapped subtropical moisture brought an extensive area of heavy rain to Northwest Montana.

Began near Polson (47.7049, -114.0510).

Source: NOAA Storm Events Database, event 850250. Narratives are written by the National Weather Service forecast office that issued the report.

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