Thunderstorm Wind in Buchanan County, Iowa

Thunderstorm Wind July 29, 2025 · Buchanan County, Iowa

70 mph

Estimated gust (61 kt)

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

What the National Weather Service wrote

A COOP Observer recorded a 61 knot gust that lasted for at least 5 minutes.

The wider storm

On July 29th, a well-organized line of severe progressed from South Dakota into Iowa during the very early the morning hours. Severe thunderstorm wind gusts occurred in eastern Iowa with scattered gusts between 70 to 80 MPH. Wind gusts over 40 MPH lasted for 30 minutes in some places. This line of storms was classified as a derecho by the Storm Prediction Center.

Began near Hazleton (42.6300, -91.8600).

Source: NOAA Storm Events Database, event 1282341. Narratives are written by the National Weather Service forecast office that issued the report.

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