Thunderstorm Wind in Broadwater County, Montana

Thunderstorm Wind July 13, 2021 · Broadwater County, Montana

77 mph

Measured gust (67 kt)

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

What the National Weather Service wrote

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

The wider storm

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.

Began near Townsend (46.3366, -111.5781).

Source: NOAA Storm Events Database, event 972158. Narratives are written by the National Weather Service forecast office that issued the report.

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