StormProof → hail seasons → Bismarck → 2004
Bismarck hail season 2004
3 NWS-recorded hail reports ≥1″ within 25 miles, across 3 storm days, max 1.75". Every one of those reports is a dated, located, citable official record — the context behind this market's 2004 claim volume.
Biggest storm days (2004, final record)
| Date | ≥1″ reports | Max hail | Areas named in the record |
|---|---|---|---|
| August 23, 2004 | 1 | 1.75" | MORTON |
| July 27, 2004 | 1 | 1.00" | MORTON |
| July 12, 2004 | 1 | 1.00" | BURLEIGH |
“Street flooding was reported in the low lying areas of Mandan due to very heavy rain with this storm.”
— NWS event narrative, August 23, 2004 (NCEI Storm Events)
When it fell
Jul 2 · Aug 1
Wind context: the record also holds 1 thunderstorm-wind events ≥50 kt (≈58 mph, the NWS severe criterion) in this radius for 2004 — relevant where the dispute is wind vs hail causation.
Working a Bismarck claim from 2004?
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.