Iowa hail map — July 20, 2026
NOAA radar detected hail of an inch or more over 7 Iowa cities on July 20, 2026. The largest stones — 1.50″, half dollar size — fell over Des Moines.
- Cities hit
- 7
- in Iowa
- Largest stone
- 1.50″
- half dollar size
- Impact rating
- 5/10
- from stone size
Sizes come from NOAA MRMS radar (MESH), which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.
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- All of Iowa at street level, with this storm already on it
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This page covers Iowa as a whole. Check your own address to see every storm on record for your roof — the date and the stone size for each one — and we'll email you the full report to keep.
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What people on the ground measured in Iowa on July 20, 2026
10 reports filed with the National Weather Service — 5 from trained spotters or officials. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.
- 2.75″ baseball size Storm Chaser1 NE Story City, IA5:26 PM CDTStory County
- 2.50″ hen egg size Storm Chaser2 NNE Roland, IA5:19 PM CDTStory County
Between 2 to 2.5 inch hail. Damage to vehicles.
- 2.00″ hen egg size Trained Spotter1 ENE Ellsworth, IA5:07 PM CDTHamilton County
2 inch hail.
- 1.75″ golf ball size Law Enforcement4 N Kamrar, IA4:39 PM CDTHamilton County
- 1.75″ golf ball size Trained Spotter4 N Roland, IA5:15 PM CDTHamilton County
Golf ball size plus hail.
- 1.00″ quarter size Amateur RadioFairfax, IA11:04 AM CDTLinn County
Penny to Quarter Sized Hail.
- 1.00″ quarter size NWS EmployeeLuther, IA7:01 PM CDTBoone County
- 1.00″ quarter size Trained Spotter3 SSE Alleman, IA7:33 PM CDTPolk County
- 1.00″ quarter size PublicWest Des Moines, IA9:07 PM CDTPolk County
- 1.00″ quarter size Trained Spotter2 SE Waukee, IA9:13 PM CDTDallas County
Reports come from the National Weather Service Local Storm Report feed, ingested every 15 minutes. A report records where the observer was, not the full extent of the swath — treat it as evidence about the storm, not about any one roof.
Other states hit on July 20, 2026
The full US hail map for July 20, 2026 →Other Iowa hail days
Iowa hail on July 20, 2026
NOAA radar put hail of an inch or more over 7 Iowa cities that day. The largest stones — 1.50 inches, half dollar size — were over Des Moines. Every city hit is listed above with its own stone size.