Illinois hail map — August 12, 2026
NOAA radar detected hail of an inch or more over 2 Illinois cities on August 12, 2026. The largest stones — 1.00″, quarter size — fell over Mount Vernon.
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- The August 12, 2026 swath — and every other storm since 2023 across Illinois
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- Cities hit
- 2
- in Illinois
- 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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Illinois cities hit on August 12, 2026
What people on the ground measured in Illinois on August 12, 2026
2 reports filed with the National Weather Service. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.
- 1.00″ quarter size Cocorahs1 SW Ellis Grove, IL4:30 PM CDTRandolph County
- 1.00″ quarter size Public2 ENE Ewing, IL5:18 PM CDTFranklin County
Facebook photo shows quarter size hail northeast of Ewing.
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 August 12, 2026
Other Illinois hail days
Shopping for a hail app to work Illinois?
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.
- Best hail tracking apps, comparedHailMate, HailTrace, Hail Recon, HailStrike and RadarScope — every published price sourced and linked, and who each one is genuinely right for.
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- Hail map apps for roofers (and the Hail Recon alternative)Every storm on one map instead of loading dates one at a time — plus the canvassing and the whole claim, monthly, for what one state costs them a year.
- Best canvassing apps, comparedHailMate, SalesRabbit, SPOTIO, Knockio, RoofLink and Badger Maps — every published price sourced and linked, and two of them publish none.
Illinois hail on August 12, 2026
NOAA radar put hail of an inch or more over 2 Illinois cities that day. The largest stones — 1.00 inches, quarter size — were over Mount Vernon. Every city hit is listed above with its own stone size.