52/100
Composite disaster-history score. Higher than 84% of U.S. counties. The Idaho average is 26.
Our calculation — not a government figure. Method.
What goes into it
Federal disaster declarations5 since 1953
1th percentile of all counties
Severe storms (events & deaths)3 notable · 4 deaths
76th percentile of all counties
Earthquakes (M4.5+)1 · max M5.4
91th percentile of all counties
Large wildfires (1,000+ acres)40 · largest 88,943 ac
98th percentile of all counties
Weights: declarations 40%, storms 25%, earthquakes 20%, wildfires 15%. Each layer is scored by its percentile rank among all counties, on a log scale so a handful of counties with enormous counts do not flatten everyone else.
See the full event history for Cassia County →
Counties in Idaho with a similar score
This score summarises the past. It is not a forecast, an insurance rating, or a judgment about whether to live somewhere — for that, see FEMA's National Risk Index and current National Weather Service guidance. Sources: FEMA, USGS, NIFC, NOAA/NCEI.