Ping pong-sized hail detected near Joliet, IL on August 12, 2026

Damage assessment

The radar-indicated strike point fell approximately 13 miles south of downtown Joliet, and one hail report was logged across Will County that day. At 1.5 inches, architectural asphalt shingles — the dominant material in Joliet's housing stock — are at the threshold where functional damage becomes likely: granule loss, bruising, and cracked mat are realistic outcomes rather than purely cosmetic scuffs. Shingles already past 15 years are more vulnerable; newer roofs may show bruising without immediate leaks, but that granule loss shortens remaining life. Will County's record event was 2.5 inches on 2019-09-28, which is a full size class above today's storm.

Joliet repair cost reference

Historical context

This event ranks 29th of 118 documented hail events of 1 inch or greater in the Joliet area over the past decade — a mid-tier storm, not an outlier. The largest on record for Will County was 2.5 inches on September 28, 2019. August historically sees below-average hail activity here, with only four events of this magnitude logged in ten years; May, with 41 events, is the peak month.

Storm system

This was not an isolated cell — the same weather system produced 1.5-inch hail in Johnson County, Iowa and quarter-sized hail across multiple Indiana and Iowa counties the same day, pointing to a broad regional convective event.

Contractor guidance

Local contractor data shows current backlogs of 4 to 8 weeks following storm activity in the area; scheduling sooner rather than later reduces wait time. The intake assessment rates storm chaser risk here as moderate — Joliet draws out-of-area crews after regional hail events. Illinois requires roofing contractors to hold a state license under the Roofing Industry Licensing Act (225 ILCS 335), carry minimum liability coverage, maintain workers' compensation insurance, and post a surety bond. Before signing anything, verify the contractor's license through the IDFPR public database and ask for proof of insurance — and if a contractor offers to cover your deductible, walk away, because that practice is illegal under Illinois law.

Permits & building code

At 1.5 inches, a full replacement is possible but not guaranteed — inspection results and shingle age will determine whether repair or replacement is the appropriate scope. In Joliet, the contractor pulls the permit, inspections are required, and permit costs typically run $150 to $350. Class 4 impact-resistant shingles qualify for a 10–20% discount with most Illinois insurers.