Ohio Natural Disaster Risk by County
Of Ohio's 88 counties, 0 have a Very High natural-hazard risk rating in FEMA's National Risk Index (v1.20, December 2025); the highest is Franklin County (score 98.1 of 100), and expected losses across the state total $3.1 billion a year.
OpenFEMA lists 59 federal disaster, emergency and fire management declarations for Ohio since 1956 (not counting COVID-19); the latest is DR-4945-OH, Severe Storms, Straight-Line Winds, Tornadoes, Flooding, and Landslides, declared 2 October 2026.
Live weather alerts for Ohio Latest FEMA declarations All official warnings
Most exposed counties, hazard by hazard
Top 10 by FEMA hazard risk scoreHurricane 88 rated
| # | County | Rating | Loss a year |
|---|---|---|---|
| 1 | Trumbull County | Relatively Low | $459,110 |
| 2 | Mahoning County | Relatively Low | $433,016 |
| 3 | Cuyahoga County | Relatively Low | $228,597 |
| 4 | Summit County | Relatively Low | $238,816 |
| 5 | Jefferson County | Relatively Low | $178,070 |
| 6 | Columbiana County | Relatively Low | $175,035 |
| 7 | Stark County | Very Low | $178,000 |
| 8 | Washington County | Very Low | $142,178 |
| 9 | Lucas County | Very Low | $133,197 |
| 10 | Meigs County | Very Low | $85,179 |
Tornado 88 rated
| # | County | Rating | Loss a year |
|---|---|---|---|
| 1 | Hamilton County | Very High | $53 million |
| 2 | Cuyahoga County | Very High | $33 million |
| 3 | Franklin County | Relatively High | $29 million |
| 4 | Butler County | Relatively High | $28 million |
| 5 | Lucas County | Relatively High | $18 million |
| 6 | Montgomery County | Relatively High | $8.6 million |
| 7 | Mahoning County | Relatively High | $6.5 million |
| 8 | Summit County | Relatively High | $7.9 million |
| 9 | Lorain County | Relatively High | $8.4 million |
| 10 | Trumbull County | Relatively High | $6.4 million |
Inland flooding 88 rated
| # | County | Rating | Loss a year |
|---|---|---|---|
| 1 | Franklin County | Relatively High | $210 million |
| 2 | Cuyahoga County | Relatively High | $178 million |
| 3 | Hamilton County | Relatively High | $109 million |
| 4 | Montgomery County | Relatively High | $80 million |
| 5 | Lucas County | Relatively High | $71 million |
| 6 | Summit County | Relatively High | $65 million |
| 7 | Butler County | Relatively Moderate | $62 million |
| 8 | Stark County | Relatively Moderate | $50 million |
| 9 | Lorain County | Relatively Moderate | $43 million |
| 10 | Trumbull County | Relatively Moderate | $29 million |
Coastal flooding 9 rated
| # | County | Rating | Loss a year |
|---|---|---|---|
| 1 | Ottawa County | Relatively Low | $88,451 |
| 2 | Erie County | Relatively Low | $60,793 |
| 3 | Lucas County | Very Low | $27,803 |
| 4 | Lake County | Very Low | $14,621 |
| 5 | Cuyahoga County | Very Low | $6,024 |
| 6 | Sandusky County | Very Low | $6,336 |
| 7 | Lorain County | Very Low | $6,431 |
| 8 | Ashtabula County | Very Low | $3,294 |
| 9 | Wood County | Very Low | — |
Wildfire 88 rated
| # | County | Rating | Loss a year |
|---|---|---|---|
| 1 | Adams County | Very Low | $95,891 |
| 2 | Brown County | Very Low | $68,014 |
| 3 | Highland County | Very Low | $81,611 |
| 4 | Cuyahoga County | Very Low | $60,272 |
| 5 | Summit County | Very Low | $56,916 |
| 6 | Lawrence County | Very Low | $52,100 |
| 7 | Stark County | Very Low | $48,340 |
| 8 | Mahoning County | Very Low | $36,417 |
| 9 | Ross County | Very Low | $40,855 |
| 10 | Hamilton County | Very Low | $39,303 |
Earthquake 88 rated
| # | County | Rating | Loss a year |
|---|---|---|---|
| 1 | Franklin County | Relatively Moderate | $9.5 million |
| 2 | Hamilton County | Relatively Moderate | $8.0 million |
| 3 | Montgomery County | Relatively Moderate | $6.0 million |
| 4 | Cuyahoga County | Relatively Low | $4.4 million |
| 5 | Lucas County | Relatively Low | $3.6 million |
| 6 | Shelby County | Relatively Low | $3.0 million |
| 7 | Butler County | Relatively Low | $3.3 million |
| 8 | Allen County | Relatively Low | $2.3 million |
| 9 | Miami County | Relatively Low | $2.2 million |
| 10 | Greene County | Relatively Low | $2.0 million |
Every Ohio county, highest overall risk first
88| # | County | Overall risk | Score | Loss a year | Top hazard | Declarations | Tornadoes |
|---|---|---|---|---|---|---|---|
| 1 | Franklin County | Relatively High | 98.1 | $331 million | Cold wave | 19 | 41 |
| 2 | Cuyahoga County | Relatively High | 98.0 | $282 million | Cold wave | 17 | 20 |
| 3 | Hamilton County | Relatively High | 96.3 | $221 million | Tornado | 17 | 15 |
| 4 | Montgomery County | Relatively Moderate | 92.7 | $119 million | Strong wind | 11 | 22 |
| 5 | Lucas County | Relatively Moderate | 92.4 | $111 million | Tornado | 14 | 11 |
| 6 | Butler County | Relatively Moderate | 91.5 | $120 million | Tornado | 12 | 21 |
| 7 | Summit County | Relatively Moderate | 91.2 | $102 million | Hail | 12 | 18 |
| 8 | Stark County | Relatively Moderate | 87.9 | $77 million | Hail | 10 | 18 |
| 9 | Lorain County | Relatively Moderate | 86.3 | $66 million | Strong wind | 17 | 35 |
| 10 | Trumbull County | Relatively Moderate | 84.5 | $44 million | Strong wind | 10 | 21 |
| 11 | Mahoning County | Relatively Moderate | 83.6 | $43 million | Hail | 10 | 17 |
| 12 | Licking County | Relatively Low | 78.9 | $48 million | Hail | 19 | 29 |
| 13 | Delaware County | Relatively Low | 78.8 | $69 million | Hail | 13 | 15 |
| 14 | Clermont County | Relatively Low | 77.9 | $47 million | Lightning | 17 | 24 |
| 15 | Warren County | Relatively Low | 77.8 | $62 million | Ice storm | 11 | 34 |
| 16 | Lake County | Relatively Low | 77.4 | $42 million | Winter weather | 13 | 5 |
| 17 | Clark County | Relatively Low | 77.1 | $33 million | Ice storm | 9 | 34 |
| 18 | Greene County | Relatively Low | 75.7 | $42 million | Cold wave | 14 | 25 |
| 19 | Belmont County | Relatively Low | 75.2 | $29 million | Lightning | 20 | 6 |
| 20 | Allen County | Relatively Low | 73.3 | $32 million | Earthquake | 8 | 23 |
| 21 | Fairfield County | Relatively Low | 72.6 | $39 million | Ice storm | 11 | 23 |
| 22 | Lawrence County | Relatively Low | 71.0 | $27 million | Heat wave | 14 | 8 |
| 23 | Muskingum County | Relatively Low | 70.9 | $29 million | Landslide | 16 | 25 |
| 24 | Scioto County | Relatively Low | 70.2 | $27 million | Heat wave | 16 | 16 |
| 25 | Columbiana County | Relatively Low | 69.1 | $25 million | Hail | 16 | 20 |
| 26 | Medina County | Relatively Low | 69.0 | $35 million | Winter weather | 12 | 31 |
| 27 | Tuscarawas County | Relatively Low | 69.0 | $21 million | Hail | 11 | 16 |
| 28 | Athens County | Relatively Low | 68.7 | $25 million | Landslide | 17 | 4 |
| 29 | Jefferson County | Relatively Low | 66.7 | $22 million | Landslide | 20 | 7 |
| 30 | Wood County | Relatively Low | 65.7 | $43 million | Ice storm | 8 | 28 |
| 31 | Portage County | Relatively Low | 65.1 | $29 million | Hail | 10 | 18 |
| 32 | Wayne County | Relatively Low | 64.9 | $22 million | Hail | 8 | 25 |
| 33 | Washington County | Relatively Low | 64.4 | $22 million | Landslide | 18 | 7 |
| 34 | Ross County | Relatively Low | 62.9 | $21 million | Landslide | 14 | 16 |
| 35 | Ashtabula County | Relatively Low | 62.6 | $19 million | Winter weather | 13 | 13 |
| 36 | Brown County | Relatively Low | 62.6 | $18 million | Landslide | 17 | 24 |
| 37 | Miami County | Relatively Low | 61.4 | $29 million | Earthquake | 13 | 35 |
| 38 | Erie County | Relatively Low | 61.4 | $21 million | Winter weather | 12 | 15 |
| 39 | Richland County | Relatively Low | 61.3 | $22 million | Ice storm | 16 | 30 |
| 40 | Marion County | Relatively Low | 61.1 | $20 million | Cold wave | 10 | 17 |
| 41 | Knox County | Relatively Low | 61.0 | $19 million | Hail | 11 | 13 |
| 42 | Holmes County | Relatively Low | 60.4 | $12 million | Hail | 10 | 12 |
| 43 | Geauga County | Relatively Low | 60.3 | $20 million | Winter weather | 11 | 17 |
| 44 | Ottawa County | Relatively Low | 59.2 | $22 million | Strong wind | 11 | 15 |
| 45 | Sandusky County | Relatively Low | 56.7 | $20 million | Hail | 11 | 14 |
| 46 | Shelby County | Relatively Low | 56.2 | $18 million | Earthquake | 13 | 8 |
| 47 | Hancock County | Relatively Low | 54.1 | $31 million | Hail | 12 | 17 |
| 48 | Logan County | Relatively Low | 53.2 | $19 million | Hail | 12 | 8 |
| 49 | Meigs County | Relatively Low | 53.0 | $12 million | Landslide | 16 | 5 |
| 50 | Darke County | Relatively Low | 52.7 | $20 million | Tornado | 11 | 30 |
| 51 | Pickaway County | Relatively Low | 50.9 | $18 million | Drought | 13 | 29 |
| 52 | Huron County | Relatively Low | 50.3 | $17 million | Lightning | 12 | 38 |
| 53 | Coshocton County | Relatively Low | 49.1 | $11 million | Landslide | 14 | 6 |
| 54 | Gallia County | Relatively Low | 48.3 | $12 million | Landslide | 15 | 8 |
| 55 | Hocking County | Relatively Low | 47.3 | $14 million | Landslide | 16 | 7 |
| 56 | Seneca County | Relatively Low | 46.9 | $16 million | Hail | 11 | 24 |
| 57 | Ashland County | Relatively Low | 46.3 | $15 million | Hail | 10 | 20 |
| 58 | Williams County | Relatively Low | 44.4 | $12 million | Strong wind | 6 | 6 |
| 59 | Adams County | Relatively Low | 43.8 | $13 million | Inland flooding | 17 | 18 |
| 60 | Preble County | Relatively Low | 43.3 | $15 million | Strong wind | 9 | 16 |
| 61 | Highland County | Relatively Low | 43.2 | $13 million | Drought | 10 | 25 |
| 62 | Pike County | Relatively Low | 43.1 | $11 million | Landslide | 15 | 14 |
| 63 | Defiance County | Very Low | 41.9 | $16 million | Hail | 6 | 12 |
| 64 | Auglaize County | Very Low | 41.8 | $15 million | Earthquake | 11 | 23 |
| 65 | Guernsey County | Very Low | 37.5 | $9.3 million | Landslide | 15 | 12 |
| 66 | Jackson County | Very Low | 35.8 | $8.1 million | Landslide | 14 | 7 |
| 67 | Crawford County | Very Low | 35.2 | $12 million | Ice storm | 13 | 18 |
| 68 | Clinton County | Very Low | 34.0 | $12 million | Ice storm | 8 | 36 |
| 69 | Henry County | Very Low | 33.8 | $13 million | Hail | 8 | 18 |
| 70 | Fulton County | Very Low | 33.6 | $12 million | Drought | 7 | 14 |
| 71 | Putnam County | Very Low | 32.9 | $14 million | Hail | 11 | 28 |
| 72 | Union County | Very Low | 32.7 | $19 million | Ice storm | 11 | 12 |
| 73 | Mercer County | Very Low | 31.6 | $18 million | Earthquake | 12 | 25 |
| 74 | Monroe County | Very Low | 27.3 | $6.5 million | Landslide | 20 | 3 |
| 75 | Champaign County | Very Low | 26.7 | $11 million | Ice storm | 9 | 9 |
| 76 | Perry County | Very Low | 26.0 | $8.1 million | Landslide | 18 | 11 |
| 77 | Fayette County | Very Low | 25.9 | $9.5 million | Ice storm | 9 | 18 |
| 78 | Madison County | Very Low | 24.9 | $11 million | Ice storm | 10 | 16 |
| 79 | Hardin County | Very Low | 24.4 | $11 million | Lightning | 10 | 10 |
| 80 | Morrow County | Very Low | 24.4 | $8.8 million | Ice storm | 14 | 17 |
| 81 | Paulding County | Very Low | 21.2 | $8.3 million | Hail | 11 | 16 |
| 82 | Van Wert County | Very Low | 20.1 | $8.5 million | Strong wind | 11 | 38 |
| 83 | Carroll County | Very Low | 19.9 | $6.4 million | Landslide | 9 | 11 |
| 84 | Morgan County | Very Low | 18.2 | $6.6 million | Landslide | 16 | 1 |
| 85 | Wyandot County | Very Low | 17.4 | $8.5 million | Ice storm | 10 | 11 |
| 86 | Noble County | Very Low | 13.5 | $4.6 million | Landslide | 16 | 3 |
| 87 | Vinton County | Very Low | 11.8 | $3.8 million | Landslide | 14 | 6 |
| 88 | Harrison County | Very Low | 11.4 | $4.1 million | Landslide | 16 | 5 |
Score: FEMA's national percentile (higher = more risk). Declarations: federal declarations that named the county since 1953, not counting COVID-19. Tornadoes: NOAA SPC tornadoes that touched the county, 1950–2025.
Latest federal declarations in Ohio
Other states and territories
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What this page shows, and what it misses
FEMA's National Risk Index compares every US county with every other for 18 natural hazards, combining expected losses with social vulnerability and community resilience. It is a planning-level estimate for nationwide comparison, not a flood-zone map and not the risk to any one property — for flood zones use FEMA's Flood Map Service Center ↗. Federal declarations exclude state declarations and SBA or USDA designations.
Federal Emergency Management Agency (FEMA), National Risk Index Dataset: National Risk Index Counties - v1.20.0 (December 2025). Retrieved from https://services.arcgis.com/XG15cJAlne2vxtgt/ArcGIS/rest/services/National_Risk_Index_Counties/FeatureServer/0/query on November 2, 2026, 1:20 PM EST. This product uses the Federal Emergency Management Agency’s National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
Federal Emergency Management Agency (FEMA), OpenFEMA Dataset: Disaster Declarations Summaries - v2, retrieved from https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries on November 2, 2026, 1:21 PM EST. This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
Tornado records: NOAA/NWS Storm Prediction Center, Severe Weather Database, tornadoes 1950–2025 (https://www.spc.noaa.gov/wcm/data/1950-2025_actual_tornadoes.csv, downloaded 2 November 2026). Public domain; not endorsed by NOAA. Compiled by Global Incident Tracker.
Questions about Ohio
Which county in Ohio has the highest natural disaster risk?
Of Ohio's 88 counties, 0 have a Very High natural-hazard risk rating in FEMA's National Risk Index (v1.20, December 2025); the highest is Franklin County (score 98.1 of 100), and expected losses across the state total $3.1 billion a year.
Which Ohio counties are most at risk from tornadoes?
By FEMA's National Risk Index tornado risk score: Hamilton County, Cuyahoga County, Franklin County. These are planning-level estimates for whole counties, not maps of individual properties.
Which Ohio counties are most at risk from hurricanes?
By FEMA's National Risk Index hurricane risk score: Trumbull County, Mahoning County, Cuyahoga County. These are planning-level estimates for whole counties, not maps of individual properties.
How many FEMA disaster declarations has Ohio had?
OpenFEMA lists 59 federal disaster, emergency and fire management declarations for Ohio since 1956 (not counting COVID-19); the latest is DR-4945-OH, Severe Storms, Straight-Line Winds, Tornadoes, Flooding, and Landslides, declared 2 October 2026.