Ohio Storm Data: Hail, Wind & Severe Weather
Deduplicated severe weather activity for Ohio, fused from NWS warnings, storm reports, official records, and FEMA declarations.
Ohio severe weather at a glance (last 12 months)
StormAuditor's consolidated public record currently shows 9,371 storm events impacting 88 of Ohio's 88 counties in the trailing 12 months: 4,353 wind events, 3,105 hail events, 279 tornado events, 1,634 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 Ohio storm days
- August 11, 2026 — 662 recorded events (flood, hail, tornado, wind)
- March 22, 2026 — 489 recorded events (hail, wind)
- August 10, 2026 — 417 recorded events (flood, hail, tornado, wind)
- March 26, 2026 — 357 recorded events (hail, tornado, wind)
- July 21, 2026 — 336 recorded events (flood, hail, tornado, wind)
Most impacted counties
- Franklin — 251 events (155 severe)
- Washington — 237 events (175 severe)
- Licking — 197 events (138 severe)
- Cuyahoga — 189 events (146 severe)
- Montgomery — 183 events (105 severe)
- Athens — 167 events (110 severe)
- Morgan — 160 events (116 severe)
- Muskingum — 158 events (116 severe)
Additional activity recorded in NWS forecast zones: Ashtabula Lakeshore (2).
Download the Ohio dataset (free)
The full consolidated Ohio 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 Ohio 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 Ohio hail map and wind map, or check the county impact heatmap.
Ohio city storm pages: Columbus hail & wind history · Cleveland hail & wind history · Cincinnati hail & wind history · Toledo hail & wind history · Akron hail & wind history · Dayton hail & wind history · Parma hail & wind history · Canton hail & wind history · Lorain hail & wind history · Youngstown hail & wind history · Springfield hail & wind history · Elyria hail & wind history
Neighboring states: Indiana storm data · Kentucky storm data · Michigan storm data · Pennsylvania storm data · West Virginia 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.