StormProof → hail seasons → Denver → 2009
Denver hail season 2009
79 NWS-recorded hail reports ≥1″ within 35 miles, across 21 storm days, max 3.00". Every one of those reports is a dated, located, citable official record — the context behind this market's 2009 claim volume.
Biggest storm days (2009, final record)
| Date | ≥1″ reports | Max hail | Areas named in the record |
|---|---|---|---|
| July 20, 2009 | 14 | 2.00" | DOUGLAS, JEFFERSON, WELD |
| June 7, 2009 | 12 | 3.00" | ELBERT, ARAPAHOE, DENVER |
| August 17, 2009 | 10 | 1.75" | DOUGLAS, ELBERT, ARAPAHOE |
| June 14, 2009 | 8 | 1.75" | JEFFERSON, ADAMS |
| July 3, 2009 | 5 | 1.75" | ARAPAHOE, WELD |
“Two separate storms moved across Miller Farm, near State Highway 66 and County Road 19, and caused widespread crop damage. Approximately 200 acres of the farm was devastated by strong winds, heavy rain and hail. In all, 400 farms were directly impacted by the storms with widespread crop damage across Larimer and Weld Counties.”
— NWS event narrative, July 20, 2009 (NCEI Storm Events)
When it fell
Jun 37 · Jul 22 · Aug 18 · Sep 2
Wind context: the record also holds 21 thunderstorm-wind events ≥50 kt (≈58 mph, the NWS severe criterion) in this radius for 2009 — relevant where the dispute is wind vs hail causation.
Working a Denver claim from 2009?
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 Denver 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.