253
Recorded events
0
Direct deaths
0
Direct injuries
$4.1M
Property damage
Hail in Black Hawk County, Iowa: 253 recorded events between 1960 and 2025. The strongest on record measured 4.5. That places the county #422 nationally and #11 statewide for this hazard.
Decade by decade
Hail in Black Hawk County, Iowa: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for hail in Black Hawk County is the 2000s, when 93 of the county's 253 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 Black Hawk County archive, hail makes up 29.4% of all recorded severe weather across 8 hazard types. Nationally the county sits at #422 for this hazard and #11 within Iowa, putting it in the 86.4 percentile of all U.S. counties.
Seasonality
Events by month
May is the peak month for hail in Black Hawk County with 63 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 |
|---|---|---|---|
| Sep 16, 2025 | LA PORTE CITY ARPT | 1 | $0 |
| Sep 16, 2025 | WATERLOO | 1.25 | $0 |
| Sep 16, 2025 | WATERLOO | 1 | $0 |
| Sep 16, 2025 | EVANSDALE | 1 | $0 |
| Sep 16, 2025 | WATERLOO | 0.88 | $0 |
| Sep 15, 2025 | LA PORTE CITY ARPT | 1.25 | $0 |
| Apr 24, 2025 | FARMER | 0.88 | $0 |
| Mar 19, 2025 | EVANSDALE | 0.88 | $0 |
| Oct 24, 2024 | EVANSDALE | 0.75 | $0 |
| Jul 15, 2024 | LA PORTE CITY ARPT | 1.25 | $0 |
Other hazards here
More from Black Hawk County
- Thunderstorm Wind 271
- Flood 136
- Heavy Rain 92
- Flash Flood 44
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Thunderstorms formed along a stationary frontal boundary across Iowa. Although they were widespread, there was little in the way of severe weather associated with them. One inch diameter IOWA Cont'd hail was reported on the south side of Waterloo. High winds were also reported in the area. Northeast of La Porte City saw high winds. A grove of maple trees, 20 in all, was downed by the high winds. The average diameter of the trees was about one foot. The storms produced heavy rainfall. A small area of east central Tama County into west central Benton County received very heavy rainfall. Three to six inches of rain fell in a 3 hour period in that area. A check with officials in the county indicated there was no significant flooding from the rains however.
Quick answers
Frequently asked
How many hail events are on record in Black Hawk County, Iowa?
253 hail events are recorded in Black Hawk County between 1960 and 2025, causing 0 direct deaths.
What is the strongest hail recorded in Black Hawk County?
The strongest hail on record in Black Hawk County measured 4.5.
Where does the hail data for Black Hawk 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
“Hail in Black Hawk County, Iowa.” Severe Weather History. severeweatherhistory.com/county/iowa/black-hawk-county/hail/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.