Illinois hail map — August 27, 2024
NOAA radar detected hail of an inch or more over 58 Illinois cities on August 27, 2024. The largest stones — 2.00″, hen egg size — fell over Woodstock.
- Cities hit
- 58
- in Illinois
- Largest stone
- 2.00″
- hen egg size
- Impact rating
- 7/10
- 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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Illinois cities hit on August 27, 2024
What people on the ground measured in Illinois on August 27, 2024
12 reports filed with the National Weather Service — 2 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.
- 2.50″ hen egg size Public2 S Woodstock, IL5:29 PM CDTMcHenry County
A video received via social media shows hail up to 2.5 inches in diameter approximately 2 miles south of Woodstock.
- 1.75″ golf ball size Public4 N Marengo, IL5:13 PM CDTMcHenry County
Based on public photo on social media.
- 1.75″ golf ball size Trained Spotter1 SSW Woodstock, IL5:29 PM CDTMcHenry County
Near Rt 14 and Dean Street, relayed by county EMA.
- 1.25″ half dollar size PublicLake Zurich, IL6:30 PM CDTLake County
Video shared on social media showed half dollar size hail falling with strong winds. In addition, there were reports of tree branches down blocking lanes of traffic. Time estimated by radar.
- 1.00″ quarter size Public1 SSE Indian Creek, IL6:24 AM CDTLake County
Photos shared on social media of hail at least 1 in diameter. In addition, the hail caused damage to roofs, siding, and window screens. Time estimated by radar.
- 1.00″ quarter size Trained Spotter3 NW Woodstock, IL5:20 PM CDTMcHenry County
Near the intersection of Rt 14 and Rose Farm Road in Woodstock. Relayed by county EMA.
- 1.00″ quarter size Public1 W McHenry, IL6:09 PM CDTMcHenry County
Relayed via mping.
- 1.00″ quarter size Public1 SSE Indian Creek, IL6:24 PM CDTLake County
Corrects previous hail report time from 1 SSE Indian Creek. Photos shared on social media of hail at least 1 in diameter. In addition, the hail caused damage to roofs, siding, and window screens. Time estimated by radar.
- 1.00″ quarter size PublicVernon Hills, IL6:25 PM CDTLake County
Relayed via mping.
- 1.00″ quarter size Public2 N Hawthorn Woods, IL6:42 PM CDTLake County
Relayed via mping.
- 1.00″ quarter size Public1 SE Mount Prospect, IL7:38 PM CDTCook County
Relayed via mping. Time estimated by radar.
- 0.88″ penny size Public2 N Hawthorn Woods, IL6:32 PM CDTLake County
Relayed via mping.
Showing the 12 largest of 16 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
Illinois hail on August 27, 2024
NOAA radar put hail of an inch or more over 58 Illinois cities that day. The largest stones — 2.00 inches, hen egg size — were over Woodstock. Every city hit is listed above with its own stone size.