Thunderstorm Wind in Dickinson County, Iowa

Thunderstorm Wind May 15, 2026 · Dickinson County, Iowa

60 mph

Measured gust (52 kt)

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

The wider storm

The right entrance region of a jet within stronger flow across the northern tier of the U.S. helped to increase convergence by late afternoon and early evening along a cold front working eastward through northwest Iowa. Mixed-layer instability reached up to 1500-2000 J/kg courtesy of 8C/km mid-level lapse rates with deep-layer shear of 40 to 50 knots. Initially discrete cells produced large hail, with a tendency to evolve toward more linear structures.

Began near Arnolds Park (43.3500, -95.0500).

Source: NOAA Storm Events Database, event 1343072. Narratives are written by the National Weather Service forecast office that issued the report.

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