StormProof → hail seasons → Oklahoma City → 2020
Oklahoma City hail season 2020
87 NWS-recorded hail reports ≥1″ within 35 miles, across 13 storm days, max 3.50". Every one of those reports is a dated, located, citable official record — the context behind this market's 2020 claim volume.
Biggest storm days (2020, final record)
| Date | ≥1″ reports | Max hail | Areas named in the record |
|---|---|---|---|
| August 31, 2020 | 24 | 2.00" | CLEVELAND, MCCLAIN, GRADY, CANADIAN |
| April 28, 2020 | 21 | 2.75" | GRADY, MCCLAIN, CLEVELAND, POTTAWATOMIE |
| May 4, 2020 | 16 | 3.50" | MCCLAIN, CLEVELAND, POTTAWATOMIE |
| March 27, 2020 | 9 | 1.75" | OKLAHOMA, CANADIAN, LOGAN |
| April 22, 2020 | 5 | 1.50" | CANADIAN, OKLAHOMA |
When it fell
Mar 9 · Apr 32 · May 20 · Jun 1 · Aug 24 · Nov 1
Wind context: the record also holds 74 thunderstorm-wind events ≥50 kt (≈58 mph, the NWS severe criterion) in this radius for 2020 — relevant where the dispute is wind vs hail causation.
Working a Oklahoma City claim from 2020?
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.