StormProof → hail seasons → Oklahoma City → 1999
Oklahoma City hail season 1999
24 NWS-recorded hail reports ≥1″ within 35 miles, across 8 storm days, max 4.50". Every one of those reports is a dated, located, citable official record — the context behind this market's 1999 claim volume.
Biggest storm days (1999, final record)
| Date | ≥1″ reports | Max hail | Areas named in the record |
|---|---|---|---|
| May 3, 1999 | 10 | 4.50" | GRADY, CLEVELAND, OKLAHOMA |
| April 26, 1999 | 4 | 1.25" | GRADY, MCCLAIN |
| May 4, 1999 | 3 | 1.00" | CANADIAN, OKLAHOMA |
| September 7, 1999 | 2 | 1.00" | POTTAWATOMIE, CLEVELAND |
| May 17, 1999 | 2 | 1.75" | MCCLAIN, CLEVELAND |
“Hail was reported near the intersection of Reno and Sooner, but is believed to have fallen mostly west of Sooner. This report was originally listed as Oklahoma City.”
— NWS event narrative, May 3, 1999 (NCEI Storm Events)
When it fell
Mar 1 · Apr 5 · May 15 · Sep 3
Wind context: the record also holds 21 thunderstorm-wind events ≥50 kt (≈58 mph, the NWS severe criterion) in this radius for 1999 — relevant where the dispute is wind vs hail causation.
Working a Oklahoma City claim from 1999?
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 35 miles of the Oklahoma City 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.