Roosevelt County
Montana — Natural Disaster Risk Assessment
LowComposite Risk Score
National percentile: 54th
Roosevelt County faces low composite natural disaster risk (NRI Risk Index score 54.5, 54th national percentile), driven primarily by cold wave and winter weather exposure. Expected annual loss across all 18 hazard types is $10M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Cold Wave | High | 18.76 / yr | $6M |
| Winter Weather | High | 18.65 / yr | $238K |
| Strong Wind | Medium | 1.49 / yr | $826K |
| Wildfire | Low | 0.00 / yr | $121K |
| Hail | Low | 1.83 / yr | $195K |
| Heat Wave | Low | 2.48 / yr | $191K |
| Drought | Low | 37.08 / yr | $41K |
| Ice Storm | Low | 0.09 / yr | $30K |
| Tornado | Low | 0.25 / yr | $322K |
| Riverine Flood | Very Low | 1.39 / yr | $2M |
| Lightning | Low | 26.11 / yr | $48K |
| Landslide | Very Low | 0.44 / yr | $93 |
| Earthquake | Very Low | 0.00 / yr | $10K |
| Avalanche | Very Low | 0.00 / yr | $0 |
| 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 Roosevelt County?
Roosevelt County has a composite FEMA National Risk Index score of 54.5 out of 100, placing it in the Low category and the 54th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Roosevelt County?
The three highest-rated hazards are Cold Wave (High, $6M EAL), Winter Weather (High, $238K EAL), Strong Wind (Medium, $826K EAL). These account for most of the county's expected annual losses.
How does Roosevelt County compare to other Montana counties?
Roosevelt County ranks #14 of 56 Montana 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. Roosevelt County's $10M EAL is a statistical average, not a guarantee for any specific year or address.