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Alleghany County, North Carolina

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

Very Low overall risk
91st of 100highest risk in North Carolina
$7Mexpected losses a year
18federal declarations
1 in 500homes with flood insurance
Photo: U.S. Geological Survey, public domain

Alleghany County, North Carolina has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 65% of US counties. It ranks 91st of 100 counties in North Carolina. The costliest hazards here are inland flooding, cold waves and drought. FEMA estimates about $6.6 million a year in expected losses, or roughly $609 per resident. Since 1989 it has been included in 18 federal disaster or emergency declarations for natural events (9 major disasters). The most recent was in January 2026 (severe winter storm). Only 20 homes here carry federal flood insurance. Since 1978, federal flood insurance has paid about $475,000 on 13 claims here.

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

Top risks in Alleghany County

$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.

Cold wave

Moderate
$1.9 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.

Drought

Moderate
$669,044 a yearExpected losses. Damaging events about 15 times a year.
  • Check local water restrictions.
  • Choose drought-tolerant plants.
HazardRatingScoreExpected loss a year
Inland floodingLow41.1
$3M
Cold waveModerate77.7
$2M
DroughtModerate83.1
$669K
TornadoLow27.5
$257K
Ice stormModerate80.5
$253K
Strong windLow24.3
$137K
EarthquakeVery Low43.8
$115K
HurricaneLow59.1
$112K
LightningLow39.1
$93K
HailVery Low17.8
$37K
LandslideModerate90.2
$34K
WildfireVery Low45.8
$22K
Winter weatherVery Low19.3
$10K

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 very high and community resilience is very low 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

Hurricane9
Tropical Storm3
Snowstorm2
Severe Storm2
Flood1
Winter Storm1

Most recent

Jan 24, 2026Severe Winter StormEmergency
Sep 28, 2024Tropical Storm HeleneMajor disaster
Sep 26, 2024Hurricane HeleneEmergency
Aug 6, 2024Tropical Storm DebbyEmergency
Oct 1, 2022Hurricane IanEmergency
Mar 3, 2021Tropical Storm EtaMajor disaster
Aug 2, 2020Hurricane IsaiasEmergency
Sep 3, 2019Hurricane DorianEmergency
Sep 14, 2018Hurricane FlorenceMajor disaster
Sep 10, 2018Hurricane FlorenceEmergency
Show all 18
Sep 25, 2013Severe Storms, Flooding, Landslides, and MudslidesMajor disaster
Feb 2, 2010Severe Winter Storms and FloodingMajor disaster
Sep 5, 2005Hurricane Katrina EvacuationEmergency
Sep 18, 2004Hurricane IvanMajor disaster
Sep 10, 2004Tropical Storm FrancesMajor disaster
Jan 13, 1996Blizzard of 96Major disaster
Mar 17, 1993Severe Snowfall & Winter StormEmergency
Sep 25, 1989Hurricane HugoMajor disaster

North Carolina also had 22 statewide declarations that did not name single counties.

Storm history since 1973

Tornado risk by county ›

The National Weather Service has logged 148 storm reports in Alleghany County since 1973, with 0 deaths and 7 injuries and about $7.2 million in reported damage. The strongest on record here was an EF2 tornado on May 8, 2009 near Blevins Xrds.

3tornadoes
55hail reports, largest 1.5 inches
47damaging thunderstorm winds
29floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
May 8, 2009EF2Blevins Xrds6 / 0
May 27, 1973F1–1 / 0
May 8, 2009EF1Blevins Xrds0 / 0

Most damaging storms

DateTypeNearDamage
Sep 27, 2024Flash FloodLaurel Spgs$5M
Jun 30, 2013Flash FloodSparta$500K
Jul 16, 2019LightningTopia$500K
Aug 17, 2016LightningGlade Vly$300K
May 27, 1973Tornado–$250K
May 8, 2009TornadoBlevins Xrds$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 1915, 0 hurricanes and 8 tropical storms have passed within 65 miles of the center of Alleghany County, 5 of them since 1950. The strongest was Tropical Storm Hugo (1989), with top winds near 65 mph about 52 miles away.

0hurricanes
0major hurricanes (Category 3+)
8tropical storms
2020most recent: Zeta

Strongest storms nearby

DateStormStrengthClosest
Sep 22, 1989HugoTropical storm, 65 mph52 mi
Aug 28, 1949UnnamedTropical storm, 60 mph45 mi
Oct 29, 2020ZetaTropical storm, 50 mph45 mi
Sep 5, 1979DavidTropical storm, 45 mph63 mi
Aug 31, 1952AbleTropical storm, 45 mph64 mi
Sep 30, 1959GracieTropical storm, 45 mph65 mi

Most recent storms

DateStormStrengthClosest
Oct 29, 2020ZetaTropical storm, 50 mph45 mi
Sep 22, 1989HugoTropical storm, 65 mph52 mi
Sep 5, 1979DavidTropical storm, 45 mph63 mi
Sep 30, 1959GracieTropical storm, 45 mph65 mi
Aug 31, 1952AbleTropical storm, 45 mph64 mi
Aug 28, 1949UnnamedTropical storm, 60 mph45 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 ›
0.2%of homes have federal flood insurance (20 policies)
16.1%of homes in mapped high-risk flood zones are insured
$475,389paid on 13 flood claims since 1978
2024costliest year, with $330,452 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

$214,800median home value (North Carolina $288,900, US $332,700)
1980median year homes were built (North Carolina 1991, US 1980)
51%of homes built before 1980, before many modern wind, quake and flood building rules
16.5%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; 7,804 housing units.

Compare in North Carolina

All 100 ›
Largest countiesOverall riskTop hazard
Wake CountyHighInland flooding
Mecklenburg CountyHighInland flooding
Guilford CountyModerateInland flooding
Forsyth CountyModerateInland flooding
Cumberland CountyModerateInland flooding
Durham CountyModerateInland flooding
Buncombe CountyModerateInland flooding
Union CountyModerateInland flooding

Neighboring counties

CountyOverall riskDeclarations
Surry CountyLow18
Wilkes CountyModerate20
Ashe CountyLow24
Grayson County, VAVery Low19

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 $3 million a year in FEMA's estimate. Cold wave is second at $1.9 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 1989, including 9 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, 91st highest of 100 in North Carolina. 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 500 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 3 tornadoes in Alleghany County since 1950. The strongest was an EF2 tornado on May 8, 2009 near Blevins Xrds. The weather service has also logged 55 hail reports and 29 floods here.

How many hurricanes have hit Alleghany County?

NOAA's hurricane records show 0 hurricanes and 8 tropical storms passing within 65 miles of the center of Alleghany County. The strongest was Tropical Storm Hugo (1989), with winds near 65 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.