Thunderstorm Wind in Ravalli County, Montana

Thunderstorm Wind August 10, 2015 · Ravalli County, Montana

59 mph

Estimated gust (51 kt)

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

What the National Weather Service wrote

Trained spotter estimated 59 mph wind gust. A person from the public on Facebook estimated wind gusts were over 65 mph in Darby.

The wider storm

A cluster of thunderstorms developed at 3 pm MDT over Lemhi county and was associated with very frequent lightning strikes. This cluster of thunderstorms developed into a line and brought strong damaging winds to the Bitterroot and Missoula valleys. Numerous power lines were knocked down as a line of 60 mph winds push through the Bitterroot valley. As the thunderstorms approached Missoula, a macroburst developed and brought 74 mph wind gusts to the city of Missoula. Many power lines and trees were brought down and caused power outages for days in some areas.

Began near Conner (45.8584, -114.2329).

Source: NOAA Storm Events Database, event 596006. Narratives are written by the National Weather Service forecast office that issued the report.

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