Union County
North Carolina — Natural Disaster Risk Assessment
MediumComposite Risk Score
National percentile: 89th
Union County faces medium composite natural disaster risk (NRI Risk Index score 89.1, 89th national percentile), driven primarily by ice storm and tornado exposure. Expected annual loss across all 18 hazard types is $110M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Ice Storm | Very High | 1.92 / yr | $3M |
| Tornado | High | 0.34 / yr | $16M |
| Riverine Flood | Medium | 2.43 / yr | $73M |
| Strong Wind | High | 2.90 / yr | $3M |
| Earthquake | Low | 0.00 / yr | $4M |
| Lightning | High | 52.54 / yr | $1M |
| Hurricane | Low | 0.11 / yr | $3M |
| Cold Wave | Medium | 0.32 / yr | $4M |
| Winter Weather | Medium | 4.68 / yr | $219K |
| Heat Wave | Low | 3.26 / yr | $1M |
| Drought | Medium | 21.84 / yr | $713K |
| Hail | Low | 4.25 / yr | $726K |
| Wildfire | Very Low | 0.00 / yr | $41K |
| Landslide | Very Low | 0.27 / yr | $848 |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Union County?
Union County has a composite FEMA National Risk Index score of 89.1 out of 100, placing it in the Medium category and the 89th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Union County?
The three highest-rated hazards are Ice Storm (Very High, $3M EAL), Tornado (High, $16M EAL), Riverine Flood (Medium, $73M EAL). These account for most of the county's expected annual losses.
How does Union County compare to other North Carolina counties?
Union County ranks #19 of 100 North Carolina counties for overall natural disaster risk, with a medium rating.
What does Expected Annual Loss (EAL) mean?
EAL is FEMA's estimate of average annual dollar losses from natural hazards, calculated from historical event data and exposure models. Union County's $110M EAL is a statistical average, not a guarantee for any specific year or address.