Box Elder County
Utah — Natural Disaster Risk Assessment
LowComposite Risk Score
National percentile: 56th
Box Elder County faces low composite natural disaster risk (NRI Risk Index score 55.9, 56th national percentile), driven primarily by wildfire and earthquake 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 | Medium | 0.02 / yr | $6M |
| Earthquake | Medium | 0.01 / yr | $16M |
| Avalanche | Medium | 0.37 / yr | $1M |
| Winter Weather | Medium | 12.49 / yr | $251K |
| Strong Wind | Medium | 0.72 / yr | $1M |
| Lightning | Medium | 30.65 / yr | $595K |
| Drought | Low | 112.62 / yr | $493K |
| Landslide | Very Low | 3.08 / yr | $2K |
| Heat Wave | Low | 2.72 / yr | $458K |
| Cold Wave | Very Low | 0.08 / yr | $434K |
| Riverine Flood | Very Low | 0.14 / yr | $4M |
| Ice Storm | Very Low | 0.01 / yr | $14K |
| Tornado | Very Low | 0.31 / yr | $170K |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
| Hail | Very Low | 0.19 / yr | $38K |
| 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 Box Elder County?
Box Elder County has a composite FEMA National Risk Index score of 55.9 out of 100, placing it in the Low category and the 56th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Box Elder County?
The three highest-rated hazards are Wildfire (Medium, $6M EAL), Earthquake (Medium, $16M EAL), Avalanche (Medium, $1M EAL). These account for most of the county's expected annual losses.
How does Box Elder County compare to other Utah counties?
Box Elder County ranks #9 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. Box Elder County's $31M EAL is a statistical average, not a guarantee for any specific year or address.