Hail History

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Hail history for Iowa County, IA

Last hail in the countyAug 12, 20260.5 in (marble)
Hail days, last 12 months2
Largest hail since 20062.75 in (baseball)Aug 7, 2026
Hail days since 200648
Days with hail 1 inch or larger30
Tornadoes in the county10
Damaging wind reports in the county94

92 hail reports in Iowa County since 2006 on 48 days. The largest stones measured 2.75 in (baseball) on Aug 7, 2026.

Cities in Iowa County

Recent hail in Iowa County

DateHail sizeWhereSource
Aug 12, 20260.5 in
marble
East Amana
2 hail reports
NWS storm report (preliminary)
Aug 7, 20262.75 in
baseball
Millersburg, North English
3 hail reports
NWS storm report (preliminary)
Oct 24, 20241 in
quarter
East Amana
1 hail report
NOAA Storm Events

One row per day: the largest hail reported in the county that day, the places and the number of reports.

Hail days in Iowa County by year

306207708209210511312313114151162173182191202112242342425226

When hail season peaks in Iowa County

1Jan2Feb5Mar6Apr13May12Jun3Jul3Aug1Sep2OctNovDec

Damaging thunderstorm winds in Iowa County

94 reports of damaging thunderstorm wind in Iowa County since 2006, on 48 days. The strongest measured gust was 81 mph on Mar 6, 2017.

DateStrongest gustWhereSource
Aug 12, 202667 mph, measuredUpper South Amana, Marengo, Homestead
4 wind reports
NWS storm report (preliminary)
Aug 7, 2026damage reportedNorth English
1 wind report
NWS storm report (preliminary)
Jul 20, 2026damage reportedMarengo
1 wind report
NWS storm report (preliminary)
Jul 4, 202658 mph, measuredHomestead
1 wind report
NWS storm report (preliminary)
Jun 17, 202663 mph, measuredKoszta
1 wind report
NOAA Storm Events
Apr 2, 202664 mph, measuredParnell
1 wind report
NOAA Storm Events
Aug 15, 202572 mph, measuredEast Amana
1 wind report
NOAA Storm Events
Mar 14, 202564 mph, measuredMarengo
1 wind report
NOAA Storm Events
Jul 15, 202470 mph, estimatedLadora
1 wind report
NOAA Storm Events
Jul 3, 202458 mph, estimatedNorth English
1 wind report
NOAA Storm Events

Severe thunderstorm wind means gusts of 58 mph or more, or wind that caused damage. Measured gusts come from weather stations; estimated ones from spotters and damage surveys.

Filing a roof or car hail claim?

Insurers ask for the date of loss. The dates on this page are when hail was reported near Iowa County; hail can hit one street and miss the next, so a report is not proof of damage at your address. A licensed roofer or your insurance adjuster can inspect the roof. Many policies set a time limit for filing a claim — check yours.

Data: NOAA NCEI Storm Events Database (final records through Jun 30, 2026) and National Weather Service Local Storm Reports (preliminary, since then).