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Alleghany County, Virginia

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

Very Low overall risk
52nd of 133highest risk in Virginia
$11Mexpected losses a year
18federal declarations
1 in 67homes with flood insurance
Photo: U.S. Geological Survey, public domain

Alleghany County, Virginia has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 62% of US counties. It ranks 52nd of 133 counties in Virginia. The costliest hazards here are inland flooding, strong wind and cold waves. FEMA estimates about $11 million a year in expected losses, or roughly $709 per resident. Since 1969 it has been included in 18 federal disaster or emergency declarations for natural events (12 major disasters). The most recent was in January 2026 (severe winter storm). About 1 in 67 homes here carry federal flood insurance (115 policies). Since 1978, federal flood insurance has paid about $2.9 million on 213 claims here, including $885,000 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 Alleghany County

$7.3 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.
$1.7 million a yearExpected losses. Damaging events about 2 times a year.
  • Secure outdoor furniture and trash bins before storms.
  • Have trees near the house checked.
$1.1 million a yearExpected losses. Damaging events about 5 times a year.
  • Insulate pipes in outside walls, crawl spaces and garages.
  • Know how to shut off the main water valve.
HazardRatingScoreExpected loss a year
Inland floodingLow56.3
$7M
Strong windHigh88.5
$2M
Cold waveLow55.8
$1M
LightningModerate62.8
$336K
HurricaneVery Low54.9
$110K
EarthquakeVery Low34.2
$95K
TornadoVery Low9.4
$52K
HailVery Low16.0
$50K
Winter weatherLow35.0
$33K
LandslideLow83.6
$23K
DroughtVery Low26.6
$14K
Ice stormVery Low15.1
$9K
WildfireVery Low18.1
$6K
AvalancheLow67.8
$3K
Heat waveVery Low3.7
$3K

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 moderate in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

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

By type

Hurricane5
Snowstorm4
Severe Storm4
Flood3
Drought1
Winter Storm1

Most recent

Jan 23, 2026Severe Winter StormEmergency
Sep 11, 2018Hurricane FlorenceEmergency
Oct 29, 2012Hurricane SandyEmergency
Jul 27, 2012Severe Storms and Straight-Line WindsMajor disaster
Feb 16, 2010Severe Winter Storm and SnowstormMajor disaster
Jul 13, 2006Severe Storms, Tornadoes, and FloodingMajor disaster
Sep 12, 2005Hurricane Katrina EvacuationEmergency
Oct 18, 2004Severe Storms and Flooding From the Remanants of Hurricane JeanneMajor disaster
Feb 28, 2000Severe Winter StormsMajor disaster
Sep 6, 1996Hurricane Fran and Associated Severe Storm CondMajor disaster
Show all 18
Jan 27, 1996Flooding, High Winds, and Wind Driven RainMajor disaster
Jan 13, 1996Blizzard of 96 (Severe Snow Storm)Major disaster
Mar 10, 1994Severe Ice Storms, FloodingMajor disaster
Mar 25, 1993Severe Winter StormEmergency
Nov 9, 1985Severe Storms & FloodingMajor disaster
Jul 23, 1977DroughtEmergency
Jun 23, 1972Tropical Storm AgnesMajor disaster
Aug 23, 1969Severe Storms & FloodingMajor disaster

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

Storm history since 1960

Tornado risk by county ›

The National Weather Service has logged 183 storm reports in Alleghany County since 1960, with 1 death and 5 injuries and about $11.6 million in reported damage. No tornadoes are on record here.

0tornadoes
39hail reports, largest 3 inches
102damaging thunderstorm winds
36floods and flash floods

Most damaging storms

DateTypeNearDamage
Jun 23, 2016Flash FloodJerrys Run$6M
Jan 19, 1996Flash FloodCountywide$4M
Sep 30, 2010FloodClifton Forge City$500K
Jun 29, 2012Thunderstorm WindFalling Spg$500K
May 28, 2010Flash FloodSweet Chalybeate$250K
Jan 25, 2010Flash FloodIron Gate$200K

Source: NOAA Storm Events Database, county-based reports through Jun 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 1878, 0 hurricanes and 6 tropical storms have passed within 65 miles of the center of Alleghany County, 2 of them since 1950. The strongest was an unnamed storm in 1893, with top winds near 70 mph about 61 miles away.

0hurricanes
0major hurricanes (Category 3+)
6tropical storms
1979most recent: David

Strongest storms nearby

DateStormStrengthClosest
Aug 29, 1893UnnamedTropical storm, 70 mph61 mi
Aug 29, 1949UnnamedTropical storm, 60 mph47 mi
Sep 13, 1878UnnamedTropical storm, 60 mph62 mi
Sep 1, 1952AbleTropical storm, 50 mph55 mi
Sep 5, 1979DavidTropical storm, 45 mph62 mi
Aug 3, 1915UnnamedTropical storm, 45 mph61 mi

Most recent storms

DateStormStrengthClosest
Sep 5, 1979DavidTropical storm, 45 mph62 mi
Sep 1, 1952AbleTropical storm, 50 mph55 mi
Aug 29, 1949UnnamedTropical storm, 60 mph47 mi
Aug 3, 1915UnnamedTropical storm, 45 mph61 mi
Aug 29, 1893UnnamedTropical storm, 70 mph61 mi
Sep 13, 1878UnnamedTropical storm, 60 mph62 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 Alleghany County

Check your address flood zone ›
1.5%of homes have federal flood insurance (115 policies)
11.8%of homes in mapped high-risk flood zones are insured
$2.9 millionpaid on 213 flood claims since 1978
1985costliest year, with $885,295 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 Alleghany County

$125,800median home value (Virginia $383,700, US $332,700)
1969median year homes were built (Virginia 1984, US 1980)
64%of homes built before 1980, before many modern wind, quake and flood building rules
12.5%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; 7,913 housing units.

Compare in Virginia

All 133 ›
Largest countiesOverall riskTop hazard
Fairfax CountyHighInland flooding
Prince William CountyModerateInland flooding
Virginia Beach CityLowHurricane
Loudoun CountyLowInland flooding
Chesterfield CountyModerateInland flooding
Henrico CountyModerateInland flooding
Chesapeake CityLowInland flooding
Arlington CountyLowInland flooding

Neighboring counties

CountyOverall riskDeclarations
Botetourt CountyVery Low22
Greenbrier County, WVLow25
Rockbridge CountyVery Low21
Monroe County, WVVery Low17
Covington CityVery Low13
Craig CountyVery Low24
Bath CountyVery Low20

Common questions about Alleghany County

What is the biggest natural hazard in Alleghany County?

Inland flooding has the highest expected yearly losses in Alleghany County, about $7.3 million a year in FEMA's estimate. Strong wind is second at $1.7 million.

How many federal disasters has Alleghany County had?

Alleghany County has been included in 18 federal disaster or emergency declarations for natural events since 1969, including 12 major disasters. The most recent was Severe Winter Storm in January 2026.

Is Alleghany County a high-risk place to live?

Its overall rating is Very Low, 52nd highest of 133 in 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 Alleghany County?

Standard home insurance does not cover flooding. About 1 in 67 homes in Alleghany 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 Alleghany County had?

NOAA records list 0 tornadoes in Alleghany County since 1950. The weather service has also logged 39 hail reports and 36 floods here.

How many hurricanes have hit Alleghany County?

NOAA's hurricane records show 0 hurricanes and 6 tropical storms passing within 65 miles of the center of Alleghany County. The strongest was an unnamed storm in 1893, with winds near 70 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.