Blaine County
Idaho — Natural Disaster Risk Assessment
LowComposite Risk Score
National percentile: 65th
Blaine County faces low composite natural disaster risk (NRI Risk Index score 65.4, 65th national percentile), driven primarily by avalanche and wildfire exposure. Expected annual loss across all 18 hazard types is $28M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Avalanche | Very High | 0.50 / yr | $6M |
| Wildfire | Medium | 0.01 / yr | $3M |
| Winter Weather | High | 20.34 / yr | $624K |
| Landslide | Low | 0.88 / yr | $41K |
| Earthquake | Low | 0.01 / yr | $1M |
| Riverine Flood | Low | 1.04 / yr | $15M |
| Heat Wave | Low | 1.72 / yr | $808K |
| Volcanic Activity | Very Low | 0.00 / yr | $24 |
| Lightning | Low | 26.03 / yr | $308K |
| Cold Wave | Low | 0.72 / yr | $884K |
| Strong Wind | Low | 0.53 / yr | $226K |
| Drought | Very Low | 75.29 / yr | $955 |
| Ice Storm | Very Low | 0.02 / yr | $5K |
| Tornado | Very Low | 0.22 / yr | $46K |
| Hail | Very Low | 0.20 / yr | $18K |
| 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 Blaine County?
Blaine County has a composite FEMA National Risk Index score of 65.4 out of 100, placing it in the Low category and the 65th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Blaine County?
The three highest-rated hazards are Avalanche (Very High, $6M EAL), Wildfire (Medium, $3M EAL), Winter Weather (High, $624K EAL). These account for most of the county's expected annual losses.
How does Blaine County compare to other Idaho counties?
Blaine County ranks #8 of 44 Idaho 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. Blaine County's $28M EAL is a statistical average, not a guarantee for any specific year or address.