How big was the hail on August 5, 2024?

The maximum estimated stone size anywhere in Illinois that day was 1.00 inches. Sizes vary street to street inside a single swath, so a city's figure is the largest radar estimated anywhere within about 5 miles of it.

Does this mean roofs were damaged?

Radar measures stone size, not damage. Whether a particular roof was damaged depends on stone size, wind direction, roof age and material — only an inspection settles it. These figures tell you where it is worth looking.

How do I see the actual swath on a map?

A HailMate plan puts the whole of Illinois on a real interactive map with this swath and three years of others already on it. $79/mo, and the canvassing tools come with it.

Illinois · August 5, 2024

Illinois hail map — August 5, 2024

Name: Illinois hail map — August 5, 2024
Creator: HailMate

NOAA radar detected hail of an inch or more over 22 Illinois cities on August 5, 2024. The largest stones — 1.00″, quarter size — fell over Joliet.

Hail swath map for Joliet, IL on August 5, 2024 showing 1.00 inch hail. — Swath over Joliet on August 5, 2024 — 1.00″ hail. Each city below has its own map for this storm.

Cities hit: 22; in Illinois
Largest stone: 1.00″; quarter size
Impact rating: 3/10; 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.

Roofing contractors

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HailMate's canvassing map: hail swaths colour-banded by stone size, from yellow through red to purple, laid over a satellite view of a Texas territory, with hail swath and territory controls.

All of Illinois at street level, with this storm already on it
Three years of hail swaths, filterable by stone size
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Homeowners

Did hail hit your address?

This page covers Illinois as a whole. Check your own address to see every storm on record for your roof — the date and the stone size for each one — and we'll email you the full report to keep.

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Free, and no account needed to look it up. If hail did hit, you can ask for a free inspection from a vetted local roofer.

What people on the ground measured in Illinois on August 5, 2024

5 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.

2.00″ hen egg size Public
5 S Polo, IL5:45 PM CDTOgle County
mPing report of 2 inch hail in Woosung.
1.75″ golf ball size Public
1 W Penrose, IL5:25 PM CDTWhiteside County
Corrects time of hail report from 1 W Penrose. Time estimated from radar.
1.75″ golf ball size Public
1 W Penrose, IL5:34 PM CDTWhiteside County
Report from mPING.
1.00″ quarter size Public
Highland Park, IL6:25 AM CDTLake County
1.00″ quarter size Public
Edgewater - Chicago, IL7:07 AM CDTCook County
Report from mPING: Quarter (1.00 in.).

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 5, 2024

Indiana2 cities · 1.00″New York2 cities · 1.00″New Hampshire1 city · 1.00″

The full US hail map for August 5, 2024 →

Other Illinois hail days

August 13, 20263 cities · 1.00″August 11, 20263 cities · 1.00″August 9, 202640 cities · 1.50″July 27, 2026127 cities · 2.00″July 10, 20262 cities · 1.00″July 4, 20261 city · 1.50″July 3, 202618 cities · 1.00″July 2, 202614 cities · 1.00″June 24, 202614 cities · 1.50″June 17, 20264 cities · 2.00″June 11, 20261 city · 1.00″June 10, 202614 cities · 1.00″

Every hail day across Illinois →

FAQ

Illinois hail on August 5, 2024

NOAA radar put hail of an inch or more over 22 Illinois cities that day. The largest stones — 1.00 inches, quarter size — were over Joliet. Every city hit is listed above with its own stone size.

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