Thunderstorm Wind in Lyon County, Iowa

Thunderstorm Wind June 11, 2025 · Lyon County, Iowa

81 mph

Estimated gust (70 kt)

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

What the National Weather Service wrote

A cattle barn was significantly damaged by thunderstorm winds.

The wider storm

As a subtle mid-level impulse worked eastward across the region, a couple of multicell thunderstorm clusters developed during the early to mid afternoon across northwest Iowa near and to the north of the surface boundary. With mixed-layer instability of 1500-2000 J/kg and deep-layer shear of 35-40 knots, organized storms developed and utilized an inverted-V thermodynamic profile to accentuate a swath of damaging wind gusts near and just south of Iowa State Highway 9.

Began near Little Rock (43.4000, -95.8900).

Source: NOAA Storm Events Database, event 1278313. Narratives are written by the National Weather Service forecast office that issued the report.

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