Union County, NC
FEMA National Risk Index scores, disaster declarations & hazard data
Union County has experienced 21 federally declared disasters since 1977, most recently Severe Winter Storm in 2026. Its overall natural hazard risk is rated Relatively Moderate — near the middle compared to other US counties.
Union County's highest-rated hazards are ice storm, tornado, and inland flooding, with its top risk rated "Very High" by FEMA's National Risk Index. NOAA records 30 storm events in the county over the past decade. Community vulnerability is relatively low (20th percentile nationally), indicating stronger recovery capacity than most US counties.
Past disasters & FEMA designations
A federal disaster declaration officially designates a county for FEMA disaster assistance. Union County has been designated in 21 declarations since 1977, covering 9 disaster types including hurricane (10), tropical storm (3), biological (2).
| Year | Type | Event name |
|---|---|---|
| 2026 | Winter Storm | Severe Winter Storm |
| 2024 | Tropical Storm | Tropical Storm Helene |
| 2024 | Tropical Storm | Tropical Storm Debby |
| 2024 | Tropical Storm | Hurricane Helene |
| 2023 | Hurricane | Hurricane Ian |
| 2020 | Hurricane | Hurricane Isaias |
| 2020 | Biological | Covid-19 Pandemic |
| 2020 | Biological | Covid-19 |
| 2019 | Hurricane | Hurricane Dorian |
| 2018 | Hurricane | Hurricane Florence |
Showing the 10 most recent of 21 total declarations since 1977.
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 | 41.6 | 0 | 0 | — |
| Inland Flooding | Relatively Moderate | 92.5 | 12 | 2 | $85K |
| Coastal Flooding | Not Applicable | — | 0 | 0 | — |
| Earthquake | Relatively Low | 85 | — | — | — |
| Heat Wave | Relatively Low | 72.2 | 0 | 0 | — |
| Tornado | Relatively High | 94.7 | 3 | 0 | $250K |
| Hurricane | Relatively Low | 81.4 | 0 | 0 | — |
| Hail | Relatively Low | 68.1 | 15 | 0 | — |
| Strong Wind | Relatively High | 88.8 | 0 | 0 | — |
| Winter Weather | Relatively Moderate | 73.5 | 0 | 0 | — |
| Ice Storm | Very High | 96.2 | — | — | — |
| Cold Wave | Relatively Moderate | 75 | — | — | — |
| Lightning | Relatively High | 84.7 | 0 | 0 | — |
| Drought | Relatively Moderate | 69.4 | 0 | 0 | — |
| Landslide | Very Low | 38.8 | 0 | 0 | — |
| Avalanche | Not Applicable | — | — | — | — |
| 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
Union County ranks in the 20th percentile (Very 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 | 20th | Very low |
| Socioeconomic status | 22nd | Very low |
| Household characteristics | 38th | Low |
| Racial & ethnic minority status | 67th | Moderate |
| Housing type & transportation | 9th | Very low |
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 | 29th | Relatively Low |
| Risk to homes | 27th | Relatively Low |
| Buildings in direct exposure zone | 69.2% | — |
NOAA tracked 30 weather events in this county over 2016–2025: 16 in 2016–20 vs 14 in 2021–25 (-12% — 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 Union County?
According to the FEMA National Risk Index, the highest-risk hazards in Union County, North Carolina are ice storm, tornado, and inland flooding. The county's overall natural hazard risk is rated Relatively Moderate — near the middle compared to other US counties.
Has Union County received federal disaster declarations?
Yes. Union County has received 21 federal disaster declarations since 1977, including declarations in 2026. The most common disaster type on record is hurricane (10 declarations).
Has Union County had any FEMA disaster declarations in 2024, 2025, or 2026?
Yes. Recent federal disaster declarations for Union County include Severe Winter Storm (2026), Tropical Storm Helene (2024), Tropical Storm Debby (2024), Hurricane Helene (2024). See the declarations table above for the full history since 1977.
How does Union County's natural hazard risk compare to nearby counties?
Among neighboring counties, Mecklenburg County, NC has the highest overall natural hazard risk (Relatively High) and Anson County, NC has the lowest (Relatively Low). Union County is rated Relatively Moderate overall.
How is Union County's composite disaster risk index calculated?
Union 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. Union County's composite score of 89 means its overall natural hazard risk is higher than 89% of US counties.