64
Recorded events
0
Direct deaths
0
Direct injuries
$4.8M
Property damage
Flash Flood in Story County, Iowa: 64 recorded events between 1996 and 2022. The strongest on record measured 0. That places the county #403 nationally and #3 statewide for this hazard.
Decade by decade
Flash Flood in Story County, Iowa: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Story County is the 2010s, when 41 of the county's 64 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 Story County archive, flash flood makes up 5.8% of all recorded severe weather across 8 hazard types. Nationally the county sits at #403 for this hazard and #3 within Iowa, putting it in the 86.8 percentile of all U.S. counties.
Seasonality
Events by month
May is the peak month for flash flood in Story County with 15 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.
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Apr 22, 2022 | SLATER | 0 | $0 |
| Apr 22, 2022 | HUXLEY | 0 | $0 |
| Jul 15, 2021 | MAXWELL | 0 | $0 |
| Jul 15, 2021 | IOWA CENTER | 0 | $0 |
| Jul 3, 2019 | ONTARIO | 0 | $0 |
| Jul 3, 2019 | AMES | 0 | $0 |
| Jun 21, 2019 | AMES | 0 | $0 |
| Sep 2, 2018 | COLO | 0 | $0 |
| Sep 2, 2018 | COLO | 0 | $0 |
| Jul 1, 2018 | KELLEY | 0 | $0 |
Other hazards here
More from Story County
- Thunderstorm Wind 390
- Hail 325
- Heavy Rain 174
- Tornado 64
- Flood 53
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
NWS CO-OP observer and Emergency Manager report flash flooding in and near Zearing. Highway 65 is under water in two places, including south 140th St. County pavement E18 is closed in several places east and west of Zearing.
Law enforcement reported portions of Lincoln Way and Grand Ave flooded. Other streets impacted include South Dakota and Mortensen, Arizona and Ontario and numerous other roads. Depth of water estimated to be 3 to 4 feet deep.
Quick answers
Frequently asked
How many flash flood events are on record in Story County, Iowa?
64 flash flood events are recorded in Story County between 1996 and 2022, causing 0 direct deaths.
What is the strongest flash flood recorded in Story County?
The strongest flash flood on record in Story County measured 0.
Where does the flash flood data for Story 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
“Flash Flood in Story County, Iowa.” Severe Weather History. severeweatherhistory.com/county/iowa/story-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.