Allegany County, NY
FEMA National Risk Index scores, disaster declarations & hazard data
Allegany County has experienced 25 federally declared disasters since 1968, most recently Remnants Of Tropical Storm Debby in 2024. Its overall natural hazard risk is rated Relatively Low — lower risk than most US counties.
Allegany County's highest-rated hazards are inland flooding, landslide, and strong wind, with its top risk rated "Relatively Moderate" by FEMA's National Risk Index. Recorded storm events have increased 71% 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. Allegany County has been designated in 25 declarations since 1968, covering 8 disaster types including severe storm (7), flood (7), hurricane (3).
| Year | Type | Event name |
|---|---|---|
| 2024 | Tropical Storm | Remnants Of Tropical Storm Debby |
| 2022 | Hurricane | Remnants Of Tropical Storm Fred |
| 2020 | Biological | Covid-19 Pandemic |
| 2020 | Biological | Covid-19 |
| 2014 | Severe Storm | Severe Storms And Flooding |
| 2013 | Flood | Severe Storms And Flooding |
| 2013 | Hurricane | Hurricane Sandy |
| 2011 | Flood | Severe Storms, Flooding, Tornadoes, And Straight-Line Winds |
| 2009 | Severe Storm | Severe Storms And Flooding |
| 2005 | Severe Storm | Severe Storms And Flooding |
Showing the 10 most recent of 25 total declarations since 1968.
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 | 19.7 | 0 | 0 | — |
| Inland Flooding | Relatively Moderate | 84.6 | 58 | 0 | $239K |
| Coastal Flooding | Not Applicable | — | 0 | 0 | — |
| Earthquake | Very Low | 27 | — | — | — |
| Heat Wave | Very Low | 14.5 | 0 | 0 | — |
| Tornado | Relatively Low | 41.5 | 3 | 0 | $275K |
| Hurricane | Relatively Low | 64.1 | 0 | 0 | — |
| Hail | Very Low | 22.9 | 7 | 0 | — |
| Strong Wind | Relatively Moderate | 67.1 | 0 | 0 | — |
| Winter Weather | Relatively Low | 31.5 | 0 | 0 | — |
| Ice Storm | Relatively Low | 34.7 | — | — | — |
| Cold Wave | Relatively Low | 41 | — | — | — |
| Lightning | Relatively Moderate | 61.2 | 2 | 0 | $5K |
| Drought | Very Low | 19.9 | 0 | 0 | — |
| Landslide | Relatively Low | 73.4 | 0 | 0 | — |
| Avalanche | Very Low | 26.5 | — | — | — |
| 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
Allegany County ranks in the 45th 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 | 45th | Low |
| Socioeconomic status | 50th | Moderate |
| Household characteristics | 14th | Very low |
| Racial & ethnic minority status | 12th | Very low |
| Housing type & transportation | 82nd | High |
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 | 11th | Very Low |
| Risk to homes | 11th | Very Low |
| Buildings in direct exposure zone | 84.4% | — |
NOAA tracked 65 weather events in this county over 2016–2025: 24 in 2016–20 vs 41 in 2021–25 (+71% — frequency increasing).
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 Allegany County?
According to the FEMA National Risk Index, the highest-risk hazards in Allegany County, New York are inland flooding, landslide, and strong wind. The county's overall natural hazard risk is rated Relatively Low — lower risk than most US counties.
Has Allegany County received federal disaster declarations?
Yes. Allegany County has received 25 federal disaster declarations since 1968, including declarations in 2024. The most common disaster type on record is severe storm (7 declarations).
Has Allegany County had any FEMA disaster declarations in 2024, 2025, or 2026?
Yes. Recent federal disaster declarations for Allegany County include Remnants Of Tropical Storm Debby (2024). See the declarations table above for the full history since 1968.
How does Allegany County's natural hazard risk compare to nearby counties?
Among neighboring counties, Cattaraugus County, NY has the highest overall natural hazard risk (Relatively Moderate) and Potter County, PA has the lowest (Very Low). Allegany County is rated Relatively Low overall.
How is Allegany County's composite disaster risk index calculated?
Allegany 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. Allegany County's composite score of 70 means its overall natural hazard risk is higher than 70% of US counties.