Illinois hail map — April 27, 2026
NOAA radar detected hail of an inch or more over 10 Illinois cities on April 27, 2026. The largest stones — 2.00″, hen egg size — fell over Edwardsville.
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- Cities hit
- 10
- in Illinois
- 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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Illinois cities hit on April 27, 2026
What people on the ground measured in Illinois on April 27, 2026
12 reports filed with the National Weather Service — 5 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.
- 2.50″ hen egg size Amateur RadioJerseyville, IL6:00 PM CDTJersey County
- 2.00″ hen egg size Trained Spotter2 WNW Bethalto, IL6:56 PM CDTMadison County
- 1.75″ golf ball size Trained SpotterVergennes, IL5:39 AM CDTJackson County
- 1.75″ golf ball size Trained SpotterDowell, IL5:51 AM CDTJackson County
- 1.75″ golf ball size Amateur RadioAlton, IL6:50 PM CDTMadison County
- 1.75″ golf ball size Public1 NW Bethalto, IL7:07 PM CDTMadison County
Report from mPING: Golf Ball (1.75 in.).
- 1.75″ golf ball size Public3 SSW Prairietown, IL7:13 PM CDTMadison County
- 1.50″ half dollar size Broadcast MediaSpringfield, IL8:57 AM CDTSangamon County
- 1.50″ half dollar size Broadcast Media1 SW Grandview, IL8:59 AM CDTSangamon County
- 1.50″ half dollar size Trained Spotter3 N Ridgway, IL10:44 AM CDTGallatin County
- 1.50″ half dollar size Public1 W Congerville, IL5:12 PM CDTWoodford County
Report from mPING: Ping Pong Ball (1.50 in.).
- 1.50″ half dollar size Emergency MngrJerseyville, IL5:55 PM CDTJersey County
Showing the 12 largest of 79 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 Illinois hail days
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This page is one storm. If you are deciding which tool to work Illinois 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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Illinois hail on April 27, 2026
NOAA radar put hail of an inch or more over 10 Illinois cities that day. The largest stones — 2.00 inches, hen egg size — were over Edwardsville. Every city hit is listed above with its own stone size.