Iowa hail map — May 21, 2024
NOAA radar detected hail of an inch or more over 6 Iowa cities on May 21, 2024. The largest stones — 2.00″, hen egg size — fell over Council Bluffs.
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- The May 21, 2024 swath — and every other storm since 2023 across Iowa
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- Cities hit
- 6
- in Iowa
- Largest stone
- 2.00″
- hen egg size
- Impact rating
- 7/10
- 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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What people on the ground measured in Iowa on May 21, 2024
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.
- 2.00″ hen egg size Public2 SSE Pella, IA11:20 AM CDTMarion County
via social media.
- 2.00″ hen egg size CO-OP Observer2 S Pella, IA11:20 AM CDTMarion County
- 1.75″ golf ball size Amateur Radio3 N Council Bluffs, IA6:06 AM CDTPottawattamie County
- 1.75″ golf ball size Fire Dept/Rescue5 WNW New Sharon, IA11:39 AM CDTMahaska County
Golf ball hail in Taintor. Time estimated from radar.
- 1.75″ golf ball size Trained Spotter1 NNW Center Junction, IA6:02 PM CDTJones County
JO100 spotter ID called in Hail report.. sent picture to Facebook. Kurt Andreesen Farmstead. 1 mile north Center Junction IA.
- 1.75″ golf ball size Emergency Mngr3 E Tipton, IA6:46 PM CDTCedar County
- 1.75″ golf ball size PublicBennett, IA7:55 PM CDTCedar County
Social media report of golf ball size hail. Time estimated by radar.
- 1.50″ half dollar size Trained Spotter2 E Melrose, IA5:38 PM CDTMonroe County
- 1.50″ half dollar size Public3 W Delmar, IA6:41 PM CDTClinton County
Report from mPING: Ping Pong Ball (1.50 in.).
- 1.25″ half dollar size Public2 N Council Bluffs, IA6:12 AM CDTPottawattamie County
- 1.25″ half dollar size Public4 W Red Oak, IA2:32 PM CDTMontgomery County
Report from mPING: Half Dollar (1.25 in.).
- 1.25″ half dollar size PublicCreston, IA3:42 PM CDTUnion County
Estimated half dollar sized hail in Creston. Time estimated with radar.
Showing the 12 largest of 43 hail reports filed that day.
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 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 May 21, 2024
NOAA radar put hail of an inch or more over 6 Iowa cities that day. The largest stones — 2.00 inches, hen egg size — were over Council Bluffs. Every city hit is listed above with its own stone size.