Iron County
Utah — Natural Disaster Risk Assessment
LowComposite Risk Score
National percentile: 61th
Iron County faces low composite natural disaster risk (NRI Risk Index score 61.4, 61th national percentile), driven primarily by wildfire and winter weather exposure. Expected annual loss across all 18 hazard types is $31M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Wildfire | High | 0.01 / yr | $15M |
| Winter Weather | High | 20.18 / yr | $958K |
| Landslide | Medium | 1.90 / yr | $86K |
| Earthquake | Low | 0.01 / yr | $4M |
| Lightning | High | 41.52 / yr | $1M |
| Volcanic Activity | Very Low | 0.00 / yr | $212 |
| Drought | Medium | 75.97 / yr | $560K |
| Avalanche | Very Low | 0.03 / yr | $526 |
| Riverine Flood | Low | 1.61 / yr | $8M |
| Heat Wave | Low | 1.28 / yr | $388K |
| Ice Storm | Very Low | 0.01 / yr | $35K |
| Strong Wind | Very Low | 0.16 / yr | $153K |
| Cold Wave | Very Low | 0.03 / yr | $76K |
| Tornado | Very Low | 0.07 / yr | $18K |
| Hail | Very Low | 0.08 / yr | $7K |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Hurricane | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Iron County?
Iron County has a composite FEMA National Risk Index score of 61.4 out of 100, placing it in the Low category and the 61th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Iron County?
The three highest-rated hazards are Wildfire (High, $15M EAL), Winter Weather (High, $958K EAL), Landslide (Medium, $86K EAL). These account for most of the county's expected annual losses.
How does Iron County compare to other Utah counties?
Iron County ranks #7 of 29 Utah counties for overall natural disaster risk, with a low 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. Iron County's $31M EAL is a statistical average, not a guarantee for any specific year or address.