Heavy Rain — Lake, Montana

2019-09-08 to 2019-09-09 · near Polson, Lake, Montana

Event narrative

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.

Wider weather episode

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

View location on OpenStreetMap → (47.7049, -114.0510)

Source: NOAA Storm Events Database, event_id 850250. Narrative written by the NWS forecast office that issued the report.