Thunderstorm Wind in Marshall County, Iowa

Thunderstorm Wind in Marshall County, Iowa: 210 recorded events between 1961 and 2025. The strongest on record measured 92. That places the county #961 nationally and #27 statewide for this hazard.

Reporting practice changed over time — early decades are undercounted, not calmer.

The busiest decade for thunderstorm wind in Marshall County is the 2000s, when 64 of the county's 210 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.

Within the Marshall County archive, thunderstorm wind makes up 39.8% of all recorded severe weather across 8 hazard types. Nationally the county sits at #961 for this hazard and #27 within Iowa, putting it in the 69.5 percentile of all U.S. counties.

Jun is the peak month for thunderstorm wind in Marshall County with 54 recorded events, while Jan is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.

• Hail 150
• Heavy Rain 50

How many thunderstorm wind events are on record in Marshall County, Iowa?

210 thunderstorm wind events are recorded in Marshall County between 1961 and 2025, causing 0 direct deaths.

What is the strongest thunderstorm wind recorded in Marshall County?

The strongest thunderstorm wind on record in Marshall County measured 92.

Where does the thunderstorm wind data for Marshall County come from?

All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.