Henry County
Iowa — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 31th
Henry County faces very low composite natural disaster risk (NRI Risk Index score 30.9, 31th national percentile), driven primarily by heat wave and strong wind exposure. Expected annual loss across all 18 hazard types is $10M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Heat Wave | Medium | 9.00 / yr | $2M |
| Strong Wind | Medium | 5.44 / yr | $1M |
| Hail | Medium | 3.99 / yr | $835K |
| Drought | Medium | 11.48 / yr | $804K |
| Lightning | Medium | 45.03 / yr | $368K |
| Landslide | Very Low | 0.13 / yr | $3K |
| Tornado | Low | 0.34 / yr | $1M |
| Wildfire | Very Low | 0.00 / yr | $41K |
| Earthquake | Very Low | 0.00 / yr | $183K |
| Winter Weather | Low | 12.68 / yr | $48K |
| Ice Storm | Low | 0.27 / yr | $52K |
| Cold Wave | Low | 4.95 / yr | $419K |
| Riverine Flood | Very Low | 0.82 / yr | $3M |
| Hurricane | Very Low | 0.01 / yr | $4K |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Coastal Flood | 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 Henry County?
Henry County has a composite FEMA National Risk Index score of 30.9 out of 100, placing it in the Very Low category and the 31th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Henry County?
The three highest-rated hazards are Heat Wave (Medium, $2M EAL), Strong Wind (Medium, $1M EAL), Hail (Medium, $835K EAL). These account for most of the county's expected annual losses.
How does Henry County compare to other Iowa counties?
Henry County ranks #63 of 99 Iowa 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. Henry County's $10M EAL is a statistical average, not a guarantee for any specific year or address.