StormProof → hail seasons → St. Louis → 2011
St. Louis hail season 2011
102 NWS-recorded hail reports ≥1″ within 35 miles, across 16 storm days, max 4.50". Every one of those reports is a dated, located, citable official record — the context behind this market's 2011 claim volume.
Biggest storm days (2011, final record)
| Date | ≥1″ reports | Max hail | Areas named in the record |
|---|---|---|---|
| April 19, 2011 | 48 | 2.75" | JEFFERSON, MONROE, ST. LOUIS, ST. LOUIS (C) |
| May 25, 2011 | 22 | 4.50" | JEFFERSON, ST. CLAIR, ST. LOUIS, ST. LOUIS (C) |
| April 22, 2011 | 10 | 2.00" | FRANKLIN, ST. LOUIS, MADISON, ST. CHARLES |
| April 15, 2011 | 4 | 1.75" | JEFFERSON, FRANKLIN, ST. LOUIS (C), MADISON |
| June 25, 2011 | 3 | 2.00" | ST. LOUIS, MADISON, JERSEY |
“A large swath of one and three quarter to two and a half inch diameter hail fell in the Hillsboro area. One home sustained a broken window from the large hail. Also, eleven county vehicles were damaged by the large hail, in some cases knocking both the front and rear windshields out.”
— NWS event narrative, April 19, 2011 (NCEI Storm Events)
When it fell
Mar 1 · Apr 64 · May 26 · Jun 9 · Jul 2
Wind context: the record also holds 112 thunderstorm-wind events ≥50 kt (≈58 mph, the NWS severe criterion) in this radius for 2011 — relevant where the dispute is wind vs hail causation.
Working a St. Louis claim from 2011?
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.
Unlimited reports — Pro $99/mo Single report $29
Provenance
Final counts: NCEI Storm Events Database, file vintage c20260527, hail events with recorded magnitude ≥1.00″ and point coordinates within 35 miles of the St. Louis 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.