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Riverside County Disaster Risk Profile
Population 2,429,487
93/100
Composite disaster-history score. Higher than 100% of U.S. counties. The California average is 67.
Our calculation — not a government figure. Method.
What goes into it
Federal disaster declarations66 since 1953
100th percentile of all counties
Severe storms (events & deaths)16 notable · 10 deaths
71th percentile of all counties
Earthquakes (M4.5+)59 · max M6.7
99th percentile of all counties
Large wildfires (1,000+ acres)163 · largest 41,756 ac
100th 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 Riverside County →
Counties in California 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.