Iowa hail map — April 13, 2026
NOAA radar detected hail of an inch or more over 1 Iowa city on April 13, 2026. The largest stones — 1.00″, quarter size — fell over Mason City.
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- Cities hit
- 1
- in Iowa
- Largest stone
- 1.00″
- quarter size
- Impact rating
- 3/10
- from stone size
Sizes come from NOAA radar, which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.
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Iowa cities hit on April 13, 2026
What people on the ground measured in Iowa on April 13, 2026
12 reports filed with the National Weather Service — 3 from trained observers 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 Public5 SSW Remsen, IA5:42 PM CDTPlymouth County
- 1.75″ golf ball size Trained Spotter4 SE Granville, IA6:08 PM CDTOBrien County
- 1.75″ golf ball size Law Enforcement4 S Remsen, IA6:10 PM CDTPlymouth County
- 1.75″ golf ball size Public1 S Harris, IA6:30 PM CDTOsceola County
Social media report with picture. Time estimated by radar.
- 1.75″ golf ball size Public3 NNE Archer, IA6:34 PM CDTO'Brien County
Social media report with picture of estimated hail size.
- 1.50″ half dollar size Trained SpotterGruver, IA6:05 PM CDTEmmet County
Time estimated from spotter/radar.
- 1.50″ half dollar size PublicSanborn, IA6:40 PM CDTOBrien County
Report from mPING: Ping Pong Ball (1.50 in.).
- 1.50″ half dollar size PublicSanborn, IA6:44 PM CDTO'Brien County
- 1.50″ half dollar size Trained Spotter5 NE Webb, IA7:58 PM CDTClay County
- 1.50″ half dollar size Public2 W Garner, IA9:45 PM CDTHancock County
- 1.25″ half dollar size Public7 S Remsen, IA5:37 PM CDTPlymouth County
- 1.25″ half dollar size PublicSanborn, IA6:41 PM CDTO'Brien County
Showing the 12 largest of 27 hail reports filed that day.
These are verified ground reports, updated 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 Iowa hail days
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This page is one storm. If you are deciding which tool to work Iowa with all season, these compare the ones roofers actually buy — with every price taken from the vendor's own site and linked.
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Iowa hail on April 13, 2026
NOAA radar put hail of an inch or more over 1 Iowa city that day. The largest stones — 1.00 inches, quarter size — were over Mason City. Every city hit is listed above with its own stone size.