203
Recorded events
0
Direct deaths
1
Direct injuries
$4.4M
Property damage
Thunderstorm Wind in Cass County, Iowa: 203 recorded events between 1968 and 2025. The strongest on record measured 94. That places the county #1,008 nationally and #29 statewide for this hazard.
Decade by decade
Thunderstorm Wind in Cass County, Iowa: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for thunderstorm wind in Cass County is the 2000s, when 69 of the county's 203 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 Cass County archive, thunderstorm wind makes up 36.9% of all recorded severe weather across 8 hazard types. Nationally the county sits at #1,008 for this hazard and #29 within Iowa, putting it in the 68.0 percentile of all U.S. counties.
Seasonality
Events by month
Jun is the peak month for thunderstorm wind in Cass County with 66 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.
Significant events
Deadliest on record
| Date | Location | Scale | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| May 22, 1998 | ATLANTIC | 57 | 0 | 1 | $50K |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Jul 8, 2025 | MASSENA | 56 | $2K |
| Jul 8, 2025 | GRISWOLD | 50 | $0 |
| Jun 23, 2025 | ATLANTIC | 52 | $0 |
| Jun 17, 2025 | ATLANTIC | 50 | $0 |
| Apr 29, 2025 | ANITA | 50 | $0 |
| Mar 14, 2025 | CUMBERLAND | 60 | $0 |
| Jul 31, 2024 | ATLANTIC ARPT | 51 | $0 |
| May 24, 2024 | CUMBERLAND | 53 | $0 |
| May 21, 2024 | LEWIS | 61 | $50K |
| May 7, 2024 | ATLANTIC ARPT | 51 | $0 |
Other hazards here
More from Cass County
- Hail 174
- Heavy Rain 82
- Tornado 40
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Cass County Emergency Manager reported several outbuildings damaged and power poles down along Glendale Road about 1/2 mile east of Highway 148, southeast of Anita. This is a delayed report and time estimated from radar.
Quick answers
Frequently asked
How many thunderstorm wind events are on record in Cass County, Iowa?
203 thunderstorm wind events are recorded in Cass County between 1968 and 2025, causing 0 direct deaths.
What is the strongest thunderstorm wind recorded in Cass County?
The strongest thunderstorm wind on record in Cass County measured 94.
Where does the thunderstorm wind data for Cass 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.
Cite this page
“Thunderstorm Wind in Cass County, Iowa.” Severe Weather History. severeweatherhistory.com/county/iowa/cass-county/thunderstorm-wind/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.