South Dakota Storm Data: Hail, Wind & Severe Weather
Deduplicated severe weather activity for South Dakota, fused from NWS warnings, storm reports, official records, and FEMA declarations.
South Dakota severe weather at a glance (last 12 months)
StormAuditor's consolidated public record currently shows 12,107 storm events impacting 66 of South Dakota's 66 counties in the trailing 12 months: 9,345 wind events, 2,594 hail events, 92 tornado events, 141 flood events. Events are fused from National Weather Service warnings and Special Weather Statements, observed Local Storm Reports, official NCEI storm records, and FEMA disaster declarations, then consolidated into a single event table under the published methodology. Because a single storm can carry more than one hazard tag (a squall line can produce both wind and flood records), the per-type counts can legitimately add up to more than the consolidated total. Sub-severe statements (radar-indicated gusts of 40+ mph or hail of 0.5"+) are included at a distinct moderate tier and never counted as severe.
Biggest South Dakota storm days
- January 16, 2026 — 642 recorded events (wind)
- December 18, 2025 — 632 recorded events (wind)
- March 12, 2026 — 577 recorded events (wind)
- July 2, 2026 — 435 recorded events (flood, hail, tornado, wind)
- November 25, 2025 — 382 recorded events (wind)
Most impacted counties
- Pennington — 1,014 events (530 severe)
- Meade — 826 events (428 severe)
- Harding — 693 events (367 severe)
- Fall River — 510 events (248 severe)
- Butte — 471 events (213 severe)
- Perkins — 467 events (253 severe)
- Jackson — 435 events (247 severe)
- Custer — 427 events (224 severe)
Additional activity recorded in NWS forecast zones: Shannon (21) · Meade Co Plains (20) · Pennington Co Plains (11) · Sturgis/piedmont Foothills (9).
Download the South Dakota dataset (free)
The full consolidated South Dakota event list for the trailing 12 months — dates, counties, hazard types, severities, measured gusts and hail sizes, with coordinates; source records deduplicated, and each NWS warning product listed per affected county — downloads free and stays current with the live record: download CSV · download JSON. Reusable with attribution under the data license; the JSON file carries a field dictionary and provenance notes.
Research a specific South Dakota address
Statewide counts tell you where activity concentrated; they do not tell you what happened at one property. For an individual address, run the Free Report Snapshot (an instant YES/NO against StormAuditor's screening thresholds — wind ≥ 45 mph, hail ≥ 0.75 in., deliberately below the official NWS severe criteria), use the Address Lookup, or purchase a full Weather Report for $2.99 covering every qualifying storm date at the address. Browse day-by-day activity on the Storm Calendar or compare states on the Storm Data hub.
All values are derived from public NOAA and NWS data under StormAuditor's published methodology. They are research estimates, not certified weather records — see Limitations. Data last refreshed September 18, 2026.
See where recent storms tracked on the statewide South Dakota hail map and wind map, or check the county impact heatmap.
South Dakota city storm pages: Sioux Falls hail & wind history · Rapid City hail & wind history · Aberdeen hail & wind history
Neighboring states: Iowa storm data · Minnesota storm data · Montana storm data · North Dakota storm data · Nebraska storm data · Wyoming storm data
About this page: built by Storm Auditor LLC from public NOAA/NWS records — deduplicated warnings, storm reports, station measurements, and official records on a rolling 12-month window, under the published methodology. See the StormAuditor Editorial Team for how content is produced.