StormProof → hail seasons → Sioux Falls → 2026
Sioux Falls hail season 2026
30 NWS-recorded hail reports ≥1″ within 25 miles, across 4 storm days, max 1.50". Every one of those reports is a dated, located, citable official record — the context behind this market's 2026 claim volume.
Biggest storm days (2026, final record)
| Date | ≥1″ reports | Max hail | Areas named in the record |
|---|---|---|---|
| April 13, 2026 | 9 | 1.50" | LINCOLN, MINNEHAHA |
| May 31, 2026 | 8 | 1.00" | TURNER, MINNEHAHA |
| May 17, 2026 | 7 | 1.50" | TURNER, LINCOLN, LYON, MINNEHAHA |
| May 24, 2026 | 6 | 1.50" | TURNER, LINCOLN, MINNEHAHA, MCCOOK |
When it fell
Apr 9 · May 21
Preliminary 2026 reports (SPC, season in progress)
Same-day SPC storm reports through 2026-10-01, before NCEI compiles the final record: 40 reports ≥1″ on 6 days, up to 1.75". Preliminary counts shift as reports are quality-controlled; they are labeled preliminary in every report we generate.
| Date (preliminary) | ≥1″ reports | Max hail | Locations |
|---|---|---|---|
| April 13, 2026 | 9 | 1.50" | Tea, 3 ENE Tea, 4 NE Tea, 3 NE Tea |
| August 20, 2026 | 8 | 1.75" | 4 S Sioux Falls, 2 W Hartford, Humboldt, 5 ENE Crooks |
| May 31, 2026 | 8 | 1.00" | Davis, 2 WNW Davis, 2 N Davis, Parker |
| May 17, 2026 | 7 | 1.50" | 2 W Lennox, Tea, 3 NE Lester, 4 NW Harrisburg |
| May 24, 2026 | 6 | 1.50" | 2 SE Parker, 1 SSW Harrisburg, 2 SW Sioux Falls, Wall Lake |
Wind context: the record also holds 14 thunderstorm-wind events ≥50 kt (≈58 mph, the NWS severe criterion) in this radius for 2026 — relevant where the dispute is wind vs hail causation.
Working a Sioux Falls claim from 2026?
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 c20260918, hail events with recorded magnitude ≥1.00″ and point coordinates within 25 miles of the Sioux Falls anchor. Preliminary counts: SPC daily storm reports through 2026-10-01. 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.