Allen County
Ohio — Natural Disaster Risk Assessment
LowComposite Risk Score
National percentile: 73th
Allen County faces low composite natural disaster risk (NRI Risk Index score 73.3, 73th national percentile), driven primarily by earthquake and riverine flood exposure. Expected annual loss across all 18 hazard types is $32M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Earthquake | Low | 0.00 / yr | $2M |
| Riverine Flood | Medium | 0.39 / yr | $23M |
| Strong Wind | Medium | 3.13 / yr | $1M |
| Hail | Medium | 3.29 / yr | $834K |
| Winter Weather | Medium | 9.89 / yr | $192K |
| Ice Storm | Medium | 0.79 / yr | $356K |
| Tornado | Medium | 0.25 / yr | $3M |
| Lightning | Low | 41.92 / yr | $291K |
| Heat Wave | Low | 4.74 / yr | $409K |
| Hurricane | Very Low | 0.02 / yr | $54K |
| Cold Wave | Low | 3.47 / yr | $633K |
| Landslide | Very Low | 0.07 / yr | $297 |
| Wildfire | Very Low | 0.00 / yr | $3K |
| 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 Allen County?
Allen County has a composite FEMA National Risk Index score of 73.3 out of 100, placing it in the Low category and the 73th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Allen County?
The three highest-rated hazards are Earthquake (Low, $2M EAL), Riverine Flood (Medium, $23M EAL), Strong Wind (Medium, $1M EAL). These account for most of the county's expected annual losses.
How does Allen County compare to other Ohio counties?
Allen County ranks #20 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. Allen County's $32M EAL is a statistical average, not a guarantee for any specific year or address.