Thunderstorm Wind in Grand County, Colorado

Thunderstorm Wind July 4, 2021 · Grand County, Colorado

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

Strong microburst winds damaged several boats at Grand Lake. Two large pontoon boats were lifted out of the water, one landed upside down near a home.

The wider storm

Isolated thunderstorms developed across portions of Douglas, Grand and Morgan counties. Microburst winds damaged boats on Grand Lake. One pontoon boat was lifted off the water and landed upside down near a home. In Larimer County, a brief period of heavy rain caused minor flash flooding in the Cameron Peak burn area near Glen Haven, along Miller Fork. In Douglas County, nickel size hail was observed. Lightning sparked a small grass fire near Wiggins in Morgan County.

Began near Grand Lake (40.2300, -105.8400).

Source: NOAA Storm Events Database, event 971631. Narratives are written by the National Weather Service forecast office that issued the report.

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