Fremont County
Wyoming — Natural Disaster Risk Assessment
LowComposite Risk Score
National percentile: 60th
Fremont County faces low composite natural disaster risk (NRI Risk Index score 59.7, 60th national percentile), driven primarily by landslide and wildfire exposure. Expected annual loss across all 18 hazard types is $19M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Landslide | Medium | 7.42 / yr | $265K |
| Wildfire | Medium | 0.00 / yr | $2M |
| Earthquake | Low | 0.01 / yr | $3M |
| Winter Weather | Medium | 18.28 / yr | $232K |
| Lightning | High | 35.14 / yr | $774K |
| Avalanche | Medium | 1.00 / yr | $392K |
| Cold Wave | Medium | 1.03 / yr | $2M |
| Riverine Flood | Low | 1.50 / yr | $10M |
| Hail | Low | 0.24 / yr | $138K |
| Drought | Low | 75.99 / yr | $39K |
| Strong Wind | Low | 0.29 / yr | $185K |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
| Tornado | Very Low | 0.34 / yr | $198K |
| Ice Storm | Very Low | 0.01 / yr | $11K |
| Heat Wave | Very Low | 0.11 / yr | $32K |
| 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 Fremont County?
Fremont County has a composite FEMA National Risk Index score of 59.7 out of 100, placing it in the Low category and the 60th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Fremont County?
The three highest-rated hazards are Landslide (Medium, $265K EAL), Wildfire (Medium, $2M EAL), Earthquake (Low, $3M EAL). These account for most of the county's expected annual losses.
How does Fremont County compare to other Wyoming counties?
Fremont County ranks #5 of 23 Wyoming 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. Fremont County's $19M EAL is a statistical average, not a guarantee for any specific year or address.