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 12,122 storm events impacting 66 of South Dakota's 66 counties in the trailing 12 months: 9,331 wind events, 2,605 hail events, 99 tornado events, 152 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 — 1,020 events (531 severe)
- Meade — 841 events (438 severe)
- Harding — 691 events (366 severe)
- Fall River — 510 events (244 severe)
- Butte — 484 events (221 severe)
- Perkins — 474 events (255 severe)
- Custer — 438 events (228 severe)
- Jackson — 436 events (248 severe)
Additional activity recorded in NWS forecast zones: Shannon (21) · Meade Co Plains (19) · 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 6, 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.