Alleghany County, North Carolina
Natural disaster risk, federal disaster history and flood insurance facts.
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
- 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.
- Insulate pipes in outside walls, crawl spaces and garages.
- Know how to shut off the main water valve.
- Check local water restrictions.
- Choose drought-tolerant plants.
All 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Inland flooding | 41.1 | $3M | ||
| Cold wave | 77.7 | $2M | ||
| Drought | 83.1 | $669K | ||
| Tornado | 27.5 | $257K | ||
| Ice storm | 80.5 | $253K | ||
| Strong wind | 24.3 | $137K | ||
| Earthquake | 43.8 | $115K | ||
| Hurricane | 59.1 | $112K | ||
| Lightning | 39.1 | $93K | ||
| Hail | 17.8 | $37K | ||
| Landslide | 90.2 | $34K | ||
| Wildfire | 45.8 | $22K | ||
| Winter weather | 19.3 | $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
Most recent
Show all 18
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.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| May 8, 2009 | EF2 | Blevins Xrds | 6 / 0 |
| May 27, 1973 | F1 | – | 1 / 0 |
| May 8, 2009 | EF1 | Blevins Xrds | 0 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| Sep 27, 2024 | Flash Flood | Laurel Spgs | $5M |
| Jun 30, 2013 | Flash Flood | Sparta | $500K |
| Jul 16, 2019 | Lightning | Topia | $500K |
| Aug 17, 2016 | Lightning | Glade Vly | $300K |
| May 27, 1973 | Tornado | – | $250K |
| May 8, 2009 | Tornado | Blevins 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.
Strongest storms nearby
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Sep 22, 1989 | Hugo | Tropical storm, 65 mph | 52 mi |
| Aug 28, 1949 | Unnamed | Tropical storm, 60 mph | 45 mi |
| Oct 29, 2020 | Zeta | Tropical storm, 50 mph | 45 mi |
| Sep 5, 1979 | David | Tropical storm, 45 mph | 63 mi |
| Aug 31, 1952 | Able | Tropical storm, 45 mph | 64 mi |
| Sep 30, 1959 | Gracie | Tropical storm, 45 mph | 65 mi |
Most recent storms
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Oct 29, 2020 | Zeta | Tropical storm, 50 mph | 45 mi |
| Sep 22, 1989 | Hugo | Tropical storm, 65 mph | 52 mi |
| Sep 5, 1979 | David | Tropical storm, 45 mph | 63 mi |
| Sep 30, 1959 | Gracie | Tropical storm, 45 mph | 65 mi |
| Aug 31, 1952 | Able | Tropical storm, 45 mph | 64 mi |
| Aug 28, 1949 | Unnamed | Tropical storm, 60 mph | 45 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 ›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
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 counties | Overall risk | Top hazard |
|---|---|---|
| Wake County | Inland flooding | |
| Mecklenburg County | Inland flooding | |
| Guilford County | Inland flooding | |
| Forsyth County | Inland flooding | |
| Cumberland County | Inland flooding | |
| Durham County | Inland flooding | |
| Buncombe County | Inland flooding | |
| Union County | Inland flooding |
Neighboring counties
| County | Overall risk | Declarations |
|---|---|---|
| Surry County | 18 | |
| Wilkes County | 20 | |
| Ashe County | 24 | |
| Grayson County, VA | 19 |
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.