Thunderstorm Wind — Ravalli, Montana

2025-09-10 · near Grantsdale, Ravalli, Montana

Event narrative

Thunderstorm outflow winds marched northward through the Bitterroot Valley, resulting in about 20 utility customers losing power. General gusts were 35 to 45 mph topping out near 50 mph.

Wider weather episode

Considerable instability, anomalously high moisture content, and a weak disturbance led to several rounds of thunderstorms during the afternoon and evening.

View location on OpenStreetMap → (46.2195, -114.1679)

Source: NOAA Storm Events Database, event_id 1287216. Narrative written by the NWS forecast office that issued the report.