Platte County
Wyoming — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 26th
Platte County faces very low composite natural disaster risk (NRI Risk Index score 25.7, 26th national percentile), driven primarily by wildfire and winter weather exposure. Expected annual loss across all 18 hazard types is $6M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Wildfire | Low | 0.00 / yr | $661K |
| Winter Weather | Medium | 18.23 / yr | $150K |
| Cold Wave | Medium | 3.56 / yr | $1M |
| Hail | Low | 2.95 / yr | $310K |
| Ice Storm | Low | 0.03 / yr | $54K |
| Lightning | Low | 47.19 / yr | $137K |
| Landslide | Very Low | 1.30 / yr | $556 |
| Earthquake | Very Low | 0.00 / yr | $108K |
| Drought | Low | 77.36 / yr | $33K |
| Tornado | Low | 0.66 / yr | $427K |
| Riverine Flood | Very Low | 0.75 / yr | $3M |
| Strong Wind | Low | 0.56 / yr | $146K |
| Heat Wave | Very Low | 0.26 / yr | $11K |
| Avalanche | Very Low | 0.01 / yr | $1 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Hurricane | 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 Platte County?
Platte County has a composite FEMA National Risk Index score of 25.7 out of 100, placing it in the Very Low category and the 26th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Platte County?
The three highest-rated hazards are Wildfire (Low, $661K EAL), Winter Weather (Medium, $150K EAL), Cold Wave (Medium, $1M EAL). These account for most of the county's expected annual losses.
How does Platte County compare to other Wyoming counties?
Platte County ranks #15 of 23 Wyoming counties for overall natural disaster risk, with a very 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. Platte County's $6M EAL is a statistical average, not a guarantee for any specific year or address.