Musselshell County
Montana — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 17th
Musselshell County faces very low composite natural disaster risk (NRI Risk Index score 17.0, 17th national percentile), driven primarily by wildfire and lightning exposure. Expected annual loss across all 18 hazard types is $5M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Wildfire | Medium | 0.00 / yr | $1M |
| Lightning | Medium | 30.79 / yr | $426K |
| Cold Wave | Medium | 3.95 / yr | $1M |
| Landslide | Low | 0.89 / yr | $3K |
| Winter Weather | Medium | 17.23 / yr | $77K |
| Hail | Low | 2.06 / yr | $112K |
| Drought | Very Low | 70.35 / yr | $9K |
| Earthquake | Very Low | 0.00 / yr | $23K |
| Heat Wave | Very Low | 2.11 / yr | $36K |
| Riverine Flood | Very Low | 0.89 / yr | $1M |
| Strong Wind | Very Low | 0.92 / yr | $52K |
| Tornado | Very Low | 0.15 / yr | $34K |
| Ice Storm | Very Low | 0.01 / yr | $2K |
| 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 Musselshell County?
Musselshell County has a composite FEMA National Risk Index score of 17.0 out of 100, placing it in the Very Low category and the 17th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Musselshell County?
The three highest-rated hazards are Wildfire (Medium, $1M EAL), Lightning (Medium, $426K EAL), Cold Wave (Medium, $1M EAL). These account for most of the county's expected annual losses.
How does Musselshell County compare to other Montana counties?
Musselshell County ranks #34 of 56 Montana 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. Musselshell County's $5M EAL is a statistical average, not a guarantee for any specific year or address.