StormProof → hail seasons → Bismarck → 2017
Bismarck hail season 2017
7 NWS-recorded hail reports ≥1″ within 25 miles, across 4 storm days, max 2.75". Every one of those reports is a dated, located, citable official record — the context behind this market's 2017 claim volume.
Biggest storm days (2017, final record)
| Date | ≥1″ reports | Max hail | Areas named in the record |
|---|---|---|---|
| July 31, 2017 | 2 | 1.25" | BURLEIGH |
| July 21, 2017 | 2 | 2.75" | BURLEIGH, MORTON |
| June 27, 2017 | 2 | 1.75" | BURLEIGH, MORTON |
| July 4, 2017 | 1 | 1.00" | BURLEIGH |
When it fell
Jun 2 · Jul 5
Wind context: the record also holds 9 thunderstorm-wind events ≥50 kt (≈58 mph, the NWS severe criterion) in this radius for 2017 — relevant where the dispute is wind vs hail causation.
Working a Bismarck claim from 2017?
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 25 miles of the Bismarck 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.