Seneca County
Ohio — Natural Disaster Risk Assessment
LowComposite Risk Score
National percentile: 47th
Seneca County faces low composite natural disaster risk (NRI Risk Index score 46.9, 47th national percentile), driven primarily by hail and ice storm exposure. Expected annual loss across all 18 hazard types is $16M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Hail | Medium | 3.40 / yr | $898K |
| Ice Storm | Medium | 0.90 / yr | $318K |
| Winter Weather | Medium | 9.05 / yr | $154K |
| Riverine Flood | Low | 1.00 / yr | $10M |
| Tornado | Low | 0.28 / yr | $2M |
| Earthquake | Very Low | 0.00 / yr | $431K |
| Strong Wind | Medium | 2.65 / yr | $687K |
| Lightning | Low | 40.16 / yr | $293K |
| Cold Wave | Low | 4.32 / yr | $1M |
| Hurricane | Very Low | 0.02 / yr | $46K |
| Landslide | Very Low | 0.09 / yr | $615 |
| Heat Wave | Very Low | 3.11 / yr | $188K |
| Wildfire | Very Low | 0.00 / yr | $1K |
| 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 Seneca County?
Seneca County has a composite FEMA National Risk Index score of 46.9 out of 100, placing it in the Low category and the 47th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Seneca County?
The three highest-rated hazards are Hail (Medium, $898K EAL), Ice Storm (Medium, $318K EAL), Winter Weather (Medium, $154K EAL). These account for most of the county's expected annual losses.
How does Seneca County compare to other Ohio counties?
Seneca County ranks #56 of 88 Ohio 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. Seneca County's $16M EAL is a statistical average, not a guarantee for any specific year or address.