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Adams County, Ohio

Natural disaster risk, federal disaster history and flood insurance facts.

Relatively Low overall risk
59th of 88highest risk in Ohio
$13Mexpected losses a year
17federal declarations
1 in 333homes with flood insurance
Photo: U.S. Geological Survey, public domain

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

$9.6 million a yearExpected losses. Damaging events about 3 times a year.
  • 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.
$832,180 a yearExpected losses. Damaging events about once every 4 years.
  • 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.
$649,580 a yearExpected losses. Damaging events about 6 times a year.
  • Check that cooling works before summer.
  • Know where the nearest cooling center is.
HazardRatingScoreExpected loss a year
Inland floodingLow64.3
$10M
TornadoLow41.2
$832K
Heat waveLow64.2
$650K
Strong windModerate56.4
$604K
EarthquakeVery Low49.4
$246K
Cold waveVery Low20.5
$216K
LightningLow48.5
$204K
WildfireVery Low63.0
$96K
Ice stormLow53.1
$90K
HailVery Low23.3
$78K
DroughtLow40.0
$60K
Winter weatherLow47.8
$55K
HurricaneVery Low41.8
$31K
LandslideVery Low51.0
$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

Severe Storm8
Flood5
Tornado2
Snowstorm1
Hurricane1

Most recent

Apr 8, 2019Severe Storms, Flooding, and LandslidesMajor disaster
Apr 17, 2018Severe Storms, Landslides, and MudslidesMajor disaster
Aug 20, 2012Severe Storms and Straight-Line WindsMajor disaster
Jun 30, 2012Severe StormsEmergency
Jul 13, 2011Severe Storms and FloodingMajor disaster
Sep 13, 2005Hurricane Katrina EvacuationEmergency
Feb 15, 2005Severe Winter Storms, Flooding, and MudslidesMajor disaster
Sep 19, 2004Severe Storms and FloodingMajor disaster
Aug 1, 2003Tornadoes, Flooding, Severe Storms, and High WindsMajor disaster
Mar 14, 2003Severe Winter Storm and Record/Near Record SnowMajor disaster
Show all 17
Mar 7, 2000Severe Storms and FloodingMajor disaster
Mar 4, 1997Severe Storms and FloodingMajor disaster
Jun 24, 1996FloodingMajor disaster
Jan 27, 1996Severe Storms and FloodingMajor disaster
Jan 26, 1978Blizzards & SnowstormsEmergency
Apr 4, 1974TornadoesMajor disaster
Jun 5, 1968Heavy Rains & FloodingMajor disaster

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.

16tornadoes
81hail reports, largest 2.5 inches
202damaging thunderstorm winds
100floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Apr 23, 1968F4–0 / 0
Apr 3, 1974F3–0 / 1
Mar 2, 2012EF2West Union2 / 1
Jun 8, 1979F1–0 / 0
Mar 2, 2012EF1Seaman0 / 0

Most damaging storms

DateTypeNearDamage
Mar 1, 1997Flash FloodCountywide$8M
Mar 2, 2012TornadoWest Union$2M
Jun 8, 2018Flash FloodSeaman$750K
Jun 8, 2018Flash FloodSeaman$750K
Apr 15, 1994Thunderstorm WindManchester$500K
Feb 21, 1993Thunderstorm WindReporting 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.

0hurricanes
0major hurricanes (Category 3+)
2tropical storms
1979most recent: Frederic

Strongest storms nearby

DateStormStrengthClosest
Aug 21, 1888UnnamedTropical storm, 50 mph65 mi
Sep 14, 1979FredericTropical storm, 40 mph56 mi

Most recent storms

DateStormStrengthClosest
Sep 14, 1979FredericTropical storm, 40 mph56 mi
Aug 21, 1888UnnamedTropical storm, 50 mph65 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 ›
0.3%of homes have federal flood insurance (50 policies)
6.4%of homes in mapped high-risk flood zones are insured
$1.4 millionpaid on 155 flood claims since 1978
1997costliest year, with $924,341 paid

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

$164,200median home value (Ohio $214,800, US $332,700)
1981median year homes were built (Ohio 1970, US 1980)
48%of homes built before 1980, before many modern wind, quake and flood building rules
19.8%of homes are mobile homes, which are the least safe in tornadoes and high winds

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 countiesOverall riskTop hazard
Franklin CountyHighInland flooding
Cuyahoga CountyHighInland flooding
Hamilton CountyHighInland flooding
Summit CountyModerateInland flooding
Montgomery CountyModerateInland flooding
Lucas CountyModerateInland flooding
Butler CountyModerateInland flooding
Stark CountyModerateInland flooding

Neighboring counties

CountyOverall riskDeclarations
Scioto CountyLow16
Brown CountyLow17
Highland CountyLow10
Pike CountyLow15
Mason County, KYVery Low21
Lewis County, KYVery Low32

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.