Alleghany County, VA
FEMA National Risk Index scores, disaster declarations & hazard data
Alleghany County has experienced 25 federally declared disasters since 1969, most recently Severe Winter Storm in 2026. Its overall natural hazard risk is rated Very Low — among the lowest-risk counties in the country.
Alleghany County's highest-rated hazards are strong wind, landslide, and avalanche, with its top risk rated "Relatively High" by FEMA's National Risk Index. Recorded storm events have decreased 31% over the past five years compared to the prior five-year period.
Past disasters & FEMA designations
A federal disaster declaration officially designates a county for FEMA disaster assistance. Alleghany County has been designated in 25 declarations since 1969, covering 7 disaster types including snowstorm (6), flood (6), hurricane (5).
| Year | Type | Event name |
|---|---|---|
| 2026 | Winter Storm | Severe Winter Storm |
| 2020 | Biological | Covid-19 Pandemic |
| 2020 | Biological | Covid-19 |
| 2018 | Hurricane | Hurricane Florence |
| 2013 | Hurricane | Hurricane Sandy |
| 2012 | Severe Storm | Severe Storms And Straight-Line Winds |
| 2010 | Snowstorm | Severe Winter Storm And Snowstorm |
| 2006 | Severe Storm | Severe Storms, Tornadoes, And Flooding |
| 2005 | Severe Storm | Severe Storms And Flooding From The Remanants Of Hurricane Jeanne |
| 2005 | Hurricane | Hurricane Katrina Evacuation |
Showing the 10 most recent of 25 total declarations since 1969.
Source: FEMA OpenFEMA Disaster Declarations Summaries. A single disaster can produce more than one record per county. Data current through September 2026.
Risk by hazard type
| Hazard | Risk rating | Risk score | Recorded events | Deaths | Prop. damage |
|---|---|---|---|---|---|
| Wildfire | Very Low | 18.1 | 0 | 0 | — |
| Inland Flooding | Relatively Low | 56.3 | 16 | 0 | $6.1M |
| Coastal Flooding | Not Applicable | — | 0 | 0 | — |
| Earthquake | Very Low | 34.2 | — | — | — |
| Heat Wave | Very Low | 3.7 | 0 | 0 | — |
| Tornado | Very Low | 9.4 | 0 | 0 | — |
| Hurricane | Very Low | 54.9 | 0 | 0 | — |
| Hail | Very Low | 16 | 5 | 0 | — |
| Strong Wind | Relatively High | 88.5 | 0 | 0 | — |
| Winter Weather | Relatively Low | 35 | 0 | 0 | — |
| Ice Storm | Very Low | 15.1 | — | — | — |
| Cold Wave | Relatively Low | 55.8 | — | — | — |
| Lightning | Relatively Moderate | 62.8 | 1 | 0 | $2K |
| Drought | Very Low | 26.6 | 0 | 0 | — |
| Landslide | Relatively Low | 83.6 | 0 | 0 | — |
| Avalanche | Relatively Low | 67.8 | — | — | — |
| Tsunami | Not Applicable | — | — | — | — |
| Volcanic Activity | Not Applicable | — | — | — | — |
Scores are 0–100 percentiles relative to all US counties — higher means more exposed, not that a disaster is likely this year. Event counts: NOAA Storm Events 2016–2026; earthquake counts from USGS ComCat (M3.0+, 1996–2026). See the methodology page for details.
Community vulnerability
Alleghany County ranks in the 31st percentile (Low) for community vulnerability — a measure of how hard disaster impacts tend to hit residents. Higher vulnerability means more displacement, worse health outcomes, and slower recovery after a disaster.
| SVI theme | Percentile | Vulnerability level |
|---|---|---|
| Overall | 31st | Low |
| Socioeconomic status | 31st | Low |
| Household characteristics | 19th | Very low |
| Racial & ethnic minority status | 24th | Very low |
| Housing type & transportation | 59th | Moderate |
Source: CDC/ATSDR Social Vulnerability Index 2022. Percentiles compare counties nationally — higher means more vulnerable relative to other counties. See CDC SVI for full methodology.
Future risk outlook
| Wildfire metric | National percentile | Level |
|---|---|---|
| Burn probability | 65th | Relatively High |
| Risk to homes | 67th | Relatively High |
| Buildings in direct exposure zone | 69.0% | — |
NOAA tracked 22 weather events in this county over 2016–2025: 13 in 2016–20 vs 9 in 2021–25 (-31% — frequency decreasing).
Wildfire: USDA Forest Service Wildfire Risk to Communities (RDS-2020-0016-2) — modeled values, not annual forecasts. See wildfirerisk.org. Inland flood and heat projections pending data availability; coastal sea-level projections are available for select coastal counties below — see the data page.
Nearby counties
Frequently asked questions
What natural hazards pose the greatest risk in Alleghany County?
According to the FEMA National Risk Index, the highest-risk hazards in Alleghany County, Virginia are strong wind, landslide, and avalanche. The county's overall natural hazard risk is rated Very Low — among the lowest-risk counties in the country.
Has Alleghany County received federal disaster declarations?
Yes. Alleghany County has received 25 federal disaster declarations since 1969, including declarations in 2026. The most common disaster type on record is snowstorm (6 declarations).
Has Alleghany County had any FEMA disaster declarations in 2024, 2025, or 2026?
Yes. Recent federal disaster declarations for Alleghany County include Severe Winter Storm (2026). See the declarations table above for the full history since 1969.
How does Alleghany County's natural hazard risk compare to nearby counties?
Among neighboring counties, Greenbrier County, WV has the highest overall natural hazard risk (Relatively Low) and Bath County, VA has the lowest (Very Low). Alleghany County is rated Very Low overall.
How is Alleghany County's composite disaster risk index calculated?
Alleghany County's composite disaster risk index — officially FEMA's National Risk Index (NRI) — scores every US county on a 0–100 percentile scale across 18 natural hazard types, factoring in expected annual loss, social vulnerability, and community resilience. Alleghany County's composite score of 38 means its overall natural hazard risk is higher than 38% of US counties.