Jerome County
Idaho — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 21th
Jerome County faces very low composite natural disaster risk (NRI Risk Index score 21.5, 21th national percentile), driven primarily by wildfire and winter weather 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
| Wildfire | Medium | 0.01 / yr | $1M |
| Winter Weather | High | 9.79 / yr | $228K |
| Heat Wave | Low | 3.63 / yr | $789K |
| Earthquake | Very Low | 0.00 / yr | $319K |
| Volcanic Activity | Very Low | 0.00 / yr | $7 |
| Ice Storm | Low | 0.07 / yr | $34K |
| Avalanche | Very Low | 0.01 / yr | $120 |
| Riverine Flood | Very Low | 0.14 / yr | $3M |
| Cold Wave | Low | 0.21 / yr | $292K |
| Lightning | Low | 19.49 / yr | $77K |
| Drought | Very Low | 59.79 / yr | $8K |
| Strong Wind | Low | 0.43 / yr | $128K |
| Landslide | Very Low | 0.06 / yr | $22 |
| Tornado | Very Low | 0.05 / yr | $41K |
| Hail | Very Low | 0.26 / yr | $16K |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Hurricane | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Jerome County?
Jerome County has a composite FEMA National Risk Index score of 21.5 out of 100, placing it in the Very Low category and the 21th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Jerome County?
The three highest-rated hazards are Wildfire (Medium, $1M EAL), Winter Weather (High, $228K EAL), Heat Wave (Low, $789K EAL). These account for most of the county's expected annual losses.
How does Jerome County compare to other Idaho counties?
Jerome County ranks #31 of 44 Idaho 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. Jerome County's $6M EAL is a statistical average, not a guarantee for any specific year or address.