StormProof → hail seasons → St. Louis → 2023
St. Louis hail season 2023
43 NWS-recorded hail reports ≥1″ within 35 miles, across 12 storm days, max 3.00". Every one of those reports is a dated, located, citable official record — the context behind this market's 2023 claim volume.
Biggest storm days (2023, final record)
| Date | ≥1″ reports | Max hail | Areas named in the record |
|---|---|---|---|
| June 30, 2023 | 10 | 1.75" | ST. CLAIR, ST. LOUIS, MADISON |
| July 17, 2023 | 6 | 2.50" | ST. CLAIR, MADISON, ST. LOUIS |
| April 15, 2023 | 6 | 1.75" | JEFFERSON, MONROE, ST. LOUIS, ST. LOUIS (C) |
| May 13, 2023 | 5 | 3.00" | ST. LOUIS, ST. LOUIS (C), ST. CHARLES |
| May 7, 2023 | 4 | 1.75" | ST. CLAIR |
“A wide swath of large hail was reported in northern portions of St. Louis County. The areas that had large hail was Woodson Terrace, Saint John, Bel-Ridge, Kinloch, Ferguson, and Cool Valley.”
— NWS event narrative, June 30, 2023 (NCEI Storm Events)
When it fell
Feb 2 · Mar 2 · Apr 6 · May 12 · Jun 12 · Jul 7 · Sep 2
Wind context: the record also holds 114 thunderstorm-wind events ≥50 kt (≈58 mph, the NWS severe criterion) in this radius for 2023 — relevant where the dispute is wind vs hail causation.
Working a St. Louis claim from 2023?
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.