Macomb County
Michigan — Natural Disaster Risk Assessment
HighComposite Risk Score
National percentile: 97th
Macomb County faces high composite natural disaster risk (NRI Risk Index score 96.7, 97th national percentile), driven primarily by tornado and cold wave exposure. Expected annual loss across all 18 hazard types is $268M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Tornado | Very High | 0.21 / yr | $59M |
| Cold Wave | Very High | 2.63 / yr | $41M |
| Strong Wind | Very High | 4.87 / yr | $7M |
| Ice Storm | Very High | 1.98 / yr | $3M |
| Riverine Flood | High | 1.93 / yr | $146M |
| Heat Wave | Medium | 4.21 / yr | $6M |
| Hail | Medium | 2.39 / yr | $2M |
| Lightning | High | 34.45 / yr | $1M |
| Winter Weather | High | 11.47 / yr | $403K |
| Earthquake | Low | 0.00 / yr | $3M |
| Hurricane | Very Low | 0.02 / yr | $81K |
| Coastal Flood | Low | 0.01 / yr | $66K |
| Wildfire | Very Low | 0.00 / yr | $32K |
| Landslide | Very Low | 0.07 / yr | $557 |
| Avalanche | 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 Macomb County?
Macomb County has a composite FEMA National Risk Index score of 96.7 out of 100, placing it in the High category and the 97th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Macomb County?
The three highest-rated hazards are Tornado (Very High, $59M EAL), Cold Wave (Very High, $41M EAL), Strong Wind (Very High, $7M EAL). These account for most of the county's expected annual losses.
How does Macomb County compare to other Michigan counties?
Macomb County ranks #3 of 83 Michigan counties for overall natural disaster risk, with a high 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. Macomb County's $268M EAL is a statistical average, not a guarantee for any specific year or address.