Roscommon County
Michigan — Natural Disaster Risk Assessment
LowComposite Risk Score
National percentile: 57th
Roscommon County faces low composite natural disaster risk (NRI Risk Index score 56.7, 57th national percentile), driven primarily by winter weather and lightning exposure. Expected annual loss across all 18 hazard types is $13M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Winter Weather | High | 17.68 / yr | $231K |
| Lightning | Medium | 27.10 / yr | $375K |
| Riverine Flood | Low | 0.11 / yr | $10M |
| Wildfire | Low | 0.00 / yr | $120K |
| Hail | Low | 1.56 / yr | $313K |
| Cold Wave | Low | 2.05 / yr | $1M |
| Strong Wind | Medium | 1.66 / yr | $452K |
| Tornado | Low | 0.13 / yr | $782K |
| Landslide | Very Low | 0.10 / yr | $410 |
| Hurricane | Very Low | 0.01 / yr | $7K |
| Ice Storm | Very Low | 0.19 / yr | $15K |
| Heat Wave | Very Low | 0.95 / yr | $36K |
| Earthquake | Very Low | 0.00 / yr | $16K |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Drought | 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 Roscommon County?
Roscommon County has a composite FEMA National Risk Index score of 56.7 out of 100, placing it in the Low category and the 57th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Roscommon County?
The three highest-rated hazards are Winter Weather (High, $231K EAL), Lightning (Medium, $375K EAL), Riverine Flood (Low, $10M EAL). These account for most of the county's expected annual losses.
How does Roscommon County compare to other Michigan counties?
Roscommon County ranks #37 of 83 Michigan 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. Roscommon County's $13M EAL is a statistical average, not a guarantee for any specific year or address.