StormProof → hail seasons → Kansas City → 2011
Kansas City hail season 2011
101 NWS-recorded hail reports ≥1″ within 35 miles, across 18 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 3, 2011 | 37 | 3.00" | CASS, JOHNSON, JACKSON, DOUGLAS |
| June 18, 2011 | 8 | 2.25" | CASS, JACKSON, RAY |
| June 1, 2011 | 7 | 1.75" | LEAVENWORTH |
| April 8, 2011 | 7 | 1.75" | JACKSON, CLAY, PLATTE |
| August 18, 2011 | 5 | 1.50" | CLAY, PLATTE |
“This hail event, left over a thousand homes in Lee's Summit with various degrees of hail damage. Damage included roofs, gutters, and siding. Automobiles at area dealerships and private automobiles also suffered numerous reports of damage.”
— NWS event narrative, April 3, 2011 (NCEI Storm Events)
When it fell
Feb 4 · Apr 46 · May 12 · Jun 19 · Jul 9 · Aug 11
Wind context: the record also holds 100 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 Kansas City 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.
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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 Kansas 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.