Thunderstorm Wind in Pondera County, Montana

Thunderstorm Wind July 31, 2019 · Pondera County, Montana

60 mph

Estimated gust (52 kt)

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

What the National Weather Service wrote

Emergency management officials reported that a portion of a corrugated metal roof was blown off, with debris hitting a transformer and causing a power outage. The event time was estimated by radar.

The wider storm

A southwesterly flow ahead of a trough of low pressure situated over British Columbia transported abundant mid and upper level moisture into the region, while the lower levels remained dry. This combined with an unstable atmosphere created the conditions for isolated thunderstorms with a potential for strong to severe wind gusts.

Began near Brady (48.0300, -111.8300).

Source: NOAA Storm Events Database, event 843930. Narratives are written by the National Weather Service forecast office that issued the report.

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