Home › Ohio › Jefferson County

Jefferson County, Ohio

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

Relatively Low overall risk
29th of 88highest risk in Ohio
$22Mexpected losses a year
20federal declarations
1 in 200homes with flood insurance
Photo: U.S. Geological Survey, public domain

Jefferson County, Ohio has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 67% of US counties. It ranks 29th of 88 counties in Ohio. The costliest hazards here are inland flooding, tornadoes and strong wind. FEMA estimates about $22 million a year in expected losses, or roughly $344 per resident. Since 1972 it has been included in 20 federal disaster or emergency declarations for natural events (16 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 (136 policies). Since 1978, federal flood insurance has paid about $4.0 million on 397 claims here, including $2.8 million for floods in 2004.

FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.

Top risks in Jefferson County

$18.4 million a yearExpected losses. Damaging events about once 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.
$1.1 million a yearExpected losses. Damaging events about once every 6 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.

Strong wind

Moderate
$758,704 a yearExpected losses. Damaging events about 2 times a year.
  • Secure outdoor furniture and trash bins before storms.
  • Have trees near the house checked.
HazardRatingScoreExpected loss a year
Inland floodingModerate81.6
$18M
TornadoLow50.2
$1M
Strong windModerate66.4
$759K
HailModerate74.6
$597K
LightningModerate74.3
$505K
Heat waveLow51.4
$347K
EarthquakeVery Low46.3
$198K
HurricaneLow59.8
$178K
Ice stormModerate65.1
$146K
Cold waveVery Low7.9
$45K
Winter weatherLow41.0
$41K
DroughtLow31.8
$27K
WildfireVery Low40.5
$23K
LandslideLow82.2
$19K

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 high in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

Federal declarations for natural events that included Jefferson County. 2020s bar runs to November 2026.

By type

Severe Storm9
Flood7
Snowstorm2
Tornado1
Hurricane1

Most recent

Apr 8, 2019Severe Storms, Flooding, and LandslidesMajor disaster
Apr 17, 2018Severe Storms, Landslides, and MudslidesMajor 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
Jun 3, 2004Severe Storms and FloodingMajor disaster
Jan 26, 2004Severe Storms, Flooding, Mudslides, and LandslidesMajor disaster
Aug 1, 2003Tornadoes, Flooding, Severe Storms, and High WindsMajor disaster
Show all 20
Jun 30, 1998Severe Storms, Flooding, and TornadoesMajor disaster
Jun 24, 1996FloodingMajor disaster
Jan 27, 1996Severe Storms and FloodingMajor disaster
Aug 4, 1992Severe Storms, Tornadoes & FloodingMajor disaster
Jun 6, 1990Severe Storms, Tornadoes & FloodingMajor disaster
Aug 23, 1980Severe Storms & FloodingMajor disaster
Jan 26, 1978Blizzards & SnowstormsEmergency
Feb 2, 1977SnowstormsEmergency
Sep 11, 1975Winds, Tornadoes, Heavy Rains & FloodingMajor disaster
Jul 19, 1972Tropical Storm AgnesMajor disaster

Ohio also had 3 statewide declarations that did not name single counties.

Storm history since 1954

Tornado risk by county ›

The National Weather Service has logged 358 storm reports in Jefferson County since 1954, with 1 death and 3 injuries and about $10.4 million in reported damage. The strongest on record here was an F2 tornado on April 27, 1954.

8tornadoes
77hail reports, largest 2 inches
230damaging thunderstorm winds
39floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Apr 27, 1954F2–1 / 0
May 7, 2024EF2Irondale0 / 0
Jul 29, 2021EF1Reeds Mills0 / 0
Jul 29, 2021EF1Bergholz0 / 0
Oct 21, 2021EF1Emerson0 / 0

Most damaging storms

DateTypeNearDamage
Jun 29, 1998Flash FloodCountywide$5M
Aug 20, 2014Flash FloodWarrenton$1M
Apr 16, 2010Thunderstorm WindReeds Mills$500K
Apr 27, 1954Tornado–$250K
May 9, 1996Flash FloodAdena$250K
Jul 29, 2021TornadoReeds Mills$250K

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 3 tropical storms have passed within 65 miles of the center of Jefferson County, 2 of them since 1950. The strongest was an unnamed storm in 1888, with top winds near 50 mph about 63 miles away.

0hurricanes
0major hurricanes (Category 3+)
3tropical storms
1989most recent: Hugo

Strongest storms nearby

DateStormStrengthClosest
Aug 21, 1888UnnamedTropical storm, 50 mph63 mi
Sep 22, 1989HugoTropical storm, 45 mph53 mi
Sep 14, 1979FredericTropical storm, 40 mph63 mi

Most recent storms

DateStormStrengthClosest
Sep 22, 1989HugoTropical storm, 45 mph53 mi
Sep 14, 1979FredericTropical storm, 40 mph63 mi
Aug 21, 1888UnnamedTropical storm, 50 mph63 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 Jefferson County

Check your address flood zone ›
0.5%of homes have federal flood insurance (136 policies)
9.6%of homes in mapped high-risk flood zones are insured
$4 millionpaid on 397 flood claims since 1978
2004costliest year, with $2.8 million 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 Jefferson County

$127,800median home value (Ohio $214,800, US $332,700)
1958median year homes were built (Ohio 1970, US 1980)
80%of homes built before 1980, before many modern wind, quake and flood building rules
5.9%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; 31,025 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
Columbiana CountyLow16
Belmont CountyLow20
Ohio County, WVLow21
Hancock County, WVVery Low16
Carroll CountyVery Low9
Brooke County, WVLow16
Harrison CountyVery Low16

Common questions about Jefferson County

What is the biggest natural hazard in Jefferson County?

Inland flooding has the highest expected yearly losses in Jefferson County, about $18.4 million a year in FEMA's estimate. Tornado is second at $1.1 million.

How many federal disasters has Jefferson County had?

Jefferson County has been included in 20 federal disaster or emergency declarations for natural events since 1972, including 16 major disasters. The most recent was Severe Storms, Flooding, and Landslides in April 2019.

Is Jefferson County a high-risk place to live?

Its overall rating is Relatively Low, 29th 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 Jefferson County?

Standard home insurance does not cover flooding. About 1 in 200 homes in Jefferson 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 Jefferson County had?

NOAA records list 8 tornadoes in Jefferson County since 1950. The strongest was an F2 tornado on April 27, 1954. The weather service has also logged 77 hail reports and 39 floods here.

How many hurricanes have hit Jefferson County?

NOAA's hurricane records show 0 hurricanes and 3 tropical storms passing within 65 miles of the center of Jefferson 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.