Greene County
Illinois — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 13th
Greene County faces very low composite natural disaster risk (NRI Risk Index score 13.0, 13th national percentile), driven primarily by landslide and drought exposure. Expected annual loss across all 18 hazard types is $6M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Landslide | Low | 0.31 / yr | $11K |
| Drought | Medium | 2.49 / yr | $528K |
| Heat Wave | Low | 9.58 / yr | $686K |
| Earthquake | Very Low | 0.00 / yr | $410K |
| Cold Wave | Low | 2.53 / yr | $1M |
| Strong Wind | Low | 5.91 / yr | $600K |
| Hail | Low | 4.66 / yr | $202K |
| Tornado | Low | 0.48 / yr | $629K |
| Lightning | Low | 47.79 / yr | $98K |
| Winter Weather | Very Low | 8.84 / yr | $19K |
| Hurricane | Very Low | 0.01 / yr | $6K |
| Ice Storm | Very Low | 1.19 / yr | $10K |
| Riverine Flood | Very Low | 0.61 / yr | $2M |
| Wildfire | Very Low | 0.00 / yr | $108 |
| 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 Greene County?
Greene County has a composite FEMA National Risk Index score of 13.0 out of 100, placing it in the Very Low category and the 13th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Greene County?
The three highest-rated hazards are Landslide (Low, $11K EAL), Drought (Medium, $528K EAL), Heat Wave (Low, $686K EAL). These account for most of the county's expected annual losses.
How does Greene County compare to other Illinois counties?
Greene County ranks #94 of 102 Illinois 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. Greene County's $6M EAL is a statistical average, not a guarantee for any specific year or address.