Adams County, Ohio
Natural disaster risk, federal disaster history and flood insurance facts.
Adams County, Ohio has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 56% of US counties. It ranks 59th of 88 counties in Ohio. The costliest hazards here are inland flooding, tornadoes and heat waves. FEMA estimates about $13 million a year in expected losses, or roughly $466 per resident. Since 1968 it has been included in 17 federal disaster or emergency declarations for natural events (14 major disasters). The most recent was in April 2019 (severe storms, flooding and landslides). Fewer than 1 in 100 homes here carry federal flood insurance (50 policies). Since 1978, federal flood insurance has paid about $1.4 million on 155 claims here, including $924,000 for floods in 1997.
FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.
Top risks in Adams County
- Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
- Price a flood policy now. Most new federal policies take 30 days to start.
- Pick a shelter spot: a basement, or an inside room on the lowest floor with no windows.
- Turn on emergency alerts on your phone and keep a weather radio.
- Check that cooling works before summer.
- Know where the nearest cooling center is.
All 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Inland flooding | 64.3 | $10M | ||
| Tornado | 41.2 | $832K | ||
| Heat wave | 64.2 | $650K | ||
| Strong wind | 56.4 | $604K | ||
| Earthquake | 49.4 | $246K | ||
| Cold wave | 20.5 | $216K | ||
| Lightning | 48.5 | $204K | ||
| Wildfire | 63.0 | $96K | ||
| Ice storm | 53.1 | $90K | ||
| Hail | 23.3 | $78K | ||
| Drought | 40.0 | $60K | ||
| Winter weather | 47.8 | $55K | ||
| Hurricane | 41.8 | $31K | ||
| Landslide | 51.0 | $1K |
Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is relatively moderate and community resilience is relatively low in FEMA's measures.
Federal disaster history
Recent disasters nationwide ›Declarations by decade
Federal declarations for natural events that included Adams County. 2020s bar runs to November 2026.
By type
Most recent
Show all 17
Ohio also had 3 statewide declarations that did not name single counties.
Storm history since 1966
Tornado risk by county ›The National Weather Service has logged 400 storm reports in Adams County since 1966, with 6 deaths and 8 injuries and about $16.4 million in reported damage. The strongest on record here was an F4 tornado on April 23, 1968.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| Apr 23, 1968 | F4 | – | 0 / 0 |
| Apr 3, 1974 | F3 | – | 0 / 1 |
| Mar 2, 2012 | EF2 | West Union | 2 / 1 |
| Jun 8, 1979 | F1 | – | 0 / 0 |
| Mar 2, 2012 | EF1 | Seaman | 0 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| Mar 1, 1997 | Flash Flood | Countywide | $8M |
| Mar 2, 2012 | Tornado | West Union | $2M |
| Jun 8, 2018 | Flash Flood | Seaman | $750K |
| Jun 8, 2018 | Flash Flood | Seaman | $750K |
| Apr 15, 1994 | Thunderstorm Wind | Manchester | $500K |
| Feb 21, 1993 | Thunderstorm Wind | Reporting 6 Inches Of | $500K |
Source: NOAA Storm Events Database, county-based reports through Jul 21, 2026. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.
Hurricanes and tropical storms
Hurricane risk by county ›Since 1888, 0 hurricanes and 2 tropical storms have passed within 65 miles of the center of Adams County, 1 of them since 1950. The strongest was an unnamed storm in 1888, with top winds near 50 mph about 65 miles away.
Strongest storms nearby
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Aug 21, 1888 | Unnamed | Tropical storm, 50 mph | 65 mi |
| Sep 14, 1979 | Frederic | Tropical storm, 40 mph | 56 mi |
Most recent storms
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Sep 14, 1979 | Frederic | Tropical storm, 40 mph | 56 mi |
| Aug 21, 1888 | Unnamed | Tropical storm, 50 mph | 65 mi |
Source: NOAA National Hurricane Center best-track records (HURDAT2), 1851 to 2025 for the Atlantic and 1949 to 2025 for the eastern Pacific. A storm counts if its track passed within 65 miles of the county's center while it was a tropical storm or hurricane. Strength is the storm's top sustained wind at that point, not the wind measured in the county. Older storms over the open sea were sometimes missed.
Flood insurance in Adams County
Check your address flood zone ›National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.
Homes in Adams County
Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 12,733 housing units.
Compare in Ohio
All 88 ›| Largest counties | Overall risk | Top hazard |
|---|---|---|
| Franklin County | Inland flooding | |
| Cuyahoga County | Inland flooding | |
| Hamilton County | Inland flooding | |
| Summit County | Inland flooding | |
| Montgomery County | Inland flooding | |
| Lucas County | Inland flooding | |
| Butler County | Inland flooding | |
| Stark County | Inland flooding |
Neighboring counties
| County | Overall risk | Declarations |
|---|---|---|
| Scioto County | 16 | |
| Brown County | 17 | |
| Highland County | 10 | |
| Pike County | 15 | |
| Mason County, KY | 21 | |
| Lewis County, KY | 32 |
Common questions about Adams County
What is the biggest natural hazard in Adams County?
Inland flooding has the highest expected yearly losses in Adams County, about $9.6 million a year in FEMA's estimate. Tornado is second at $832,180.
How many federal disasters has Adams County had?
Adams County has been included in 17 federal disaster or emergency declarations for natural events since 1968, including 14 major disasters. The most recent was Severe Storms, Flooding, and Landslides in April 2019.
Is Adams County a high-risk place to live?
Its overall rating is Relatively Low, 59th highest of 88 in Ohio. A county rating covers the whole area. Risk at one address can be much higher or lower, so check the FEMA flood map and ask about the home's history.
Do I need flood insurance in Adams County?
Standard home insurance does not cover flooding. About 1 in 333 homes in Adams County has federal flood insurance. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.
How many tornadoes has Adams County had?
NOAA records list 16 tornadoes in Adams County since 1950. The strongest was an F4 tornado on April 23, 1968. The weather service has also logged 81 hail reports and 100 floods here.
How many hurricanes have hit Adams County?
NOAA's hurricane records show 0 hurricanes and 2 tropical storms passing within 65 miles of the center of Adams County. The strongest was an unnamed storm in 1888, with winds near 50 mph.
Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole county, not a single property, and are not insurance or safety advice. Report a problem.