StormProof → hail seasons → Chicago → 2010
Chicago hail season 2010
33 NWS-recorded hail reports ≥1″ within 45 miles, across 7 storm days, max 2.75". Every one of those reports is a dated, located, citable official record — the context behind this market's 2010 claim volume.
Biggest storm days (2010, final record)
| Date | ≥1″ reports | Max hail | Areas named in the record |
|---|---|---|---|
| April 5, 2010 | 20 | 2.75" | DU PAGE, COOK, KANE, MCHENRY |
| April 6, 2010 | 4 | 1.75" | KANE, MCHENRY |
| June 18, 2010 | 3 | 1.00" | LAKE, LA PORTE, KANE |
| October 24, 2010 | 2 | 1.00" | KANKAKEE, COOK |
| June 23, 2010 | 2 | 1.00" | WILL, COOK |
“Hail ranging in size from a penny to a half dollar lasted for about 10 minutes causing minor damage to cars and trees.”
— NWS event narrative, April 5, 2010 (NCEI Storm Events)
When it fell
Apr 24 · May 1 · Jun 6 · Oct 2
Wind context: the record also holds 219 thunderstorm-wind events ≥50 kt (≈58 mph, the NWS severe criterion) in this radius for 2010 — relevant where the dispute is wind vs hail causation.
Working a Chicago claim from 2010?
These are aggregates. A claim file needs the per-address record: every recorded event within 1, 3 and 10 miles of the property, distances, official narratives, and citations an adjuster can check line by line. That's the report — generated in seconds, hosted on HailEvidence (the neutral evidence surface), formatted as an insurance-appeal attachment.
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Provenance
Final counts: NCEI Storm Events Database, file vintage c20260527, hail events with recorded magnitude ≥1.00″ and point coordinates within 45 miles of the Chicago anchor. NWS records are point and path observations. The absence of a nearby report does NOT prove that no hail fell at this address — it means no observation was logged nearby. A report of nearby hail documents the event; it does not by itself prove damage to a specific structure. Spotted an error? Email the address on our terms page and we correct against the source.