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Harrison County, West Virginia

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

Relatively Low overall risk
9th of 55highest risk in West Virginia
$28Mexpected losses a year
23federal declarations
1 in 200homes with flood insurance
Photo: U.S. Geological Survey, public domain

Harrison County, West Virginia has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 74% of US counties. It ranks 9th of 55 counties in West Virginia. The costliest hazards here are inland flooding, hail and tornadoes. FEMA estimates about $28 million a year in expected losses, or roughly $429 per resident. Since 1967 it has been included in 23 federal disaster or emergency declarations for natural events (18 major disasters). The most recent was in October 2026 (severe storms and flooding). Fewer than 1 in 100 homes here carry federal flood insurance (162 policies). Since 1978, federal flood insurance has paid about $5.7 million on 786 claims here, including $2.0 million for floods in 1985.

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

Top risks in Harrison County

$25.1 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.

Hail

Moderate
$588,514 a yearExpected losses. Damaging events about 2 times a year.
  • Ask about the roof age and any impact-rated shingles.
  • Check your home policy for a separate wind and hail deductible.
$588,001 a yearExpected losses. Damaging events about once every 20 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.
HazardRatingScoreExpected loss a year
Inland floodingModerate86.7
$25M
HailModerate74.2
$589K
TornadoLow35.0
$588K
LightningModerate73.7
$493K
Strong windLow44.5
$409K
EarthquakeVery Low51.9
$265K
Heat waveLow39.4
$194K
HurricaneLow60.6
$194K
Cold waveVery Low17.3
$158K
Ice stormLow51.8
$80K
Winter weatherLow58.4
$75K
DroughtLow35.3
$37K
LandslideLow84.7
$25K
WildfireVery Low25.2
$9K
AvalancheVery Low11.0
$8

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 very high in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

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

By type

Severe Storm11
Flood6
Snowstorm2
Hurricane2
Mud/Landslide1
Winter Storm1

Most recent

Oct 7, 2026Severe Storms and FloodingMajor disaster
Jan 24, 2026Severe Winter StormEmergency
Jan 30, 2024Severe Storms, Flooding, Landslides, and MudslidesMajor disaster
Apr 17, 2018Severe Storms, Flooding, Landslides, and MudslidesMajor disaster
Aug 18, 2017Severe Storms, Flooding, Landslides, and MudslidesMajor disaster
Mar 31, 2015Severe Winter Storm, Flooding, Landslides, and MudslidesMajor disaster
Oct 29, 2012Hurricane SandyEmergency
Jul 23, 2012Severe Storms and Straight-Line WindsMajor disaster
Jun 30, 2012Severe StormsEmergency
Mar 16, 2012Severe Storms, Tornadoes, Flooding, Mudslides, and LandslidesMajor disaster
Show all 23
Jun 19, 2008Severe Storms, Tornadoes, Flooding, Mudslides, AndMajor disaster
Sep 5, 2005Hurricane Katrina EvacuationEmergency
Nov 21, 2003Severe Storms, Flooding, and LandslidesMajor disaster
Jun 21, 2003Severe Storms, Flooding, and LandslidesMajor disaster
Mar 14, 2003Severe Winter Storm, Record/Near Record Snow, Heavy Rains, Flooding and LandslidesMajor disaster
Feb 28, 2000Flooding, Severe Storms, and LandslidesMajor disaster
Jul 1, 1998Severe Storms and FloodingMajor disaster
May 23, 1996Flooding, Heavy WindsMajor disaster
Jan 13, 1996Blizzard of 96 (Severe Snow Storm)Major disaster
Mar 17, 1993Severe Snowfall & Winter StormEmergency
Nov 7, 1985Severe Storms & FloodingMajor disaster
Aug 15, 1980Severe Storms & FloodingMajor disaster
Mar 13, 1967FloodingMajor disaster

West Virginia also had 6 statewide declarations that did not name single counties.

Storm history since 1970

Tornado risk by county ›

The National Weather Service has logged 506 storm reports in Harrison County since 1970, with 3 deaths and 6 injuries and about $15.9 million in reported damage. The strongest on record here was an F2 tornado on August 22, 1970.

6tornadoes
82hail reports, largest 2.75 inches
281damaging thunderstorm winds
128floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Aug 22, 1970F2–0 / 0
May 24, 1998F1Sardis1 / 0
Jun 23, 2017EF1Maken0 / 0
Jul 27, 2014EF1Johnstown0 / 0
Jun 19, 1975F1–0 / 0

Most damaging storms

DateTypeNearDamage
Jun 29, 2012Thunderstorm WindShinnston$4M
Aug 22, 1970Tornado–$3M
Jul 29, 2017Flash FloodMargret$1M
Jun 3, 2008Flash FloodIndustrial$1M
Aug 6, 2011Flash FloodLodgeville$950K
Jun 16, 1998HailClarksburg$750K

Source: NOAA Storm Events Database, county-based reports through Jul 22, 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 4 tropical storms have passed within 65 miles of the center of Harrison County, 3 of them since 1950. The strongest was Tropical Storm Isabel (2003), with top winds near 50 mph about 55 miles away.

0hurricanes
0major hurricanes (Category 3+)
4tropical storms
2003most recent: Isabel

Strongest storms nearby

DateStormStrengthClosest
Sep 19, 2003IsabelTropical storm, 50 mph55 mi
Aug 21, 1888UnnamedTropical storm, 50 mph49 mi
Sep 22, 1989HugoTropical storm, 45 mph62 mi
Sep 14, 1979FredericTropical storm, 40 mph36 mi

Most recent storms

DateStormStrengthClosest
Sep 19, 2003IsabelTropical storm, 50 mph55 mi
Sep 22, 1989HugoTropical storm, 45 mph62 mi
Sep 14, 1979FredericTropical storm, 40 mph36 mi
Aug 21, 1888UnnamedTropical storm, 50 mph49 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 Harrison County

Check your address flood zone ›
0.5%of homes have federal flood insurance (162 policies)
9.9%of homes in mapped high-risk flood zones are insured
$5.7 millionpaid on 786 flood claims since 1978
1985costliest year, with $2 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 Harrison County

$166,200median home value (West Virginia $162,600, US $332,700)
1965median year homes were built (West Virginia 1976, US 1980)
67%of homes built before 1980, before many modern wind, quake and flood building rules
7.6%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; 30,537 housing units.

Compare in West Virginia

All 55 ›
Largest countiesOverall riskTop hazard
Kanawha CountyHighInland flooding
Berkeley CountyLowInland flooding
Monongalia CountyLowInland flooding
Cabell CountyModerateInland flooding
Wood CountyLowInland flooding
Raleigh CountyLowInland flooding
Harrison CountyLowInland flooding
Mercer CountyLowInland flooding

Neighboring counties

CountyOverall riskDeclarations
Marion CountyLow20
Upshur CountyLow20
Lewis CountyLow23
Taylor CountyVery Low18
Barbour CountyVery Low19
Wetzel CountyLow26
Doddridge CountyVery Low23

Common questions about Harrison County

What is the biggest natural hazard in Harrison County?

Inland flooding has the highest expected yearly losses in Harrison County, about $25.1 million a year in FEMA's estimate. Hail is second at $588,514.

How many federal disasters has Harrison County had?

Harrison County has been included in 23 federal disaster or emergency declarations for natural events since 1967, including 18 major disasters. The most recent was Severe Storms and Flooding in October 2026.

Is Harrison County a high-risk place to live?

Its overall rating is Relatively Low, 9th highest of 55 in West Virginia. 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 Harrison County?

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

NOAA records list 6 tornadoes in Harrison County since 1950. The strongest was an F2 tornado on August 22, 1970. The weather service has also logged 82 hail reports and 128 floods here.

How many hurricanes have hit Harrison County?

NOAA's hurricane records show 0 hurricanes and 4 tropical storms passing within 65 miles of the center of Harrison County. The strongest was Tropical Storm Isabel (2003), 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.