Thunderstorm Wind — Broadwater, Montana

2021-07-13 · near Townsend, Broadwater, Montana

Event narrative

The Ginger RAWS near Townsend measured a 67 kt (77 mph) thunderstorm wind gust.

Wider weather episode

A closed low moved over the Northern Rockies and provided relatively steep mid-levels lapse rates (7C/km+) while a dry sub-cloud layer maintained DCAPE values above 1000 j/kg. An area of relatively weak thunderstorms developed just west of the Townsend area and sent an outflow boundary moving toward the city. Local topography likely played a role in boosting wind gusts to severe levels.

View location on OpenStreetMap → (46.3366, -111.5781)

Source: NOAA Storm Events Database, event_id 972158. Narrative written by the NWS forecast office that issued the report.