Tornado risk data.
For any US location.
Every score is computed from decades of public records using physics-based probability modeling, scored at neighborhood resolution. Finer than the county-level averages most public data provides, with the same data layer used by insurance and risk management professionals.
No signup required for the basic score. Instant results.
Move from local context to the property
Enter a US street address for the building-level PerilScore. The local score provides context rather than a parcel-level result.
ZIP 74631, Kay County, OK
A live look at the data driving every PerilScore.
Computed from decades of public weather data using physics-based probability modeling.
Browse tornado risk by state, county, city, and ZIP
Start with a local area score, then enter a street address for the free building-specific PerilScore.
Browse by state
Highest county scores
Highest city scores
Methodology
Public data. Real science. No black boxes.
Every score is computed from decades of public weather records using physics-based probability modeling. It's the same approach used by insurance and risk management professionals.
- Decades of public weather data
Hurricane tracks, storm intensities, fire perimeters, hail reports, all drawn from public scientific archives. We don't use proprietary data. You can audit every input.
- Physics-based probability modeling
Scores reflect how the actual peril behaves: wind fields, fire spread, ground shaking, and storm tracks. The model keeps the physics visible instead of flattening every place into a broad average.
- Used by professionals
The same PerilScore data layer is used by insurance and risk management professionals. We publish it here so anyone can find authoritative risk numbers for their location.
Real data from the PerilScore model
Representative local scores backed by public data.
Every score published on this site is computed from decades of public weather data using physics-based probability modeling. It’s the same approach used by insurance and risk management professionals.
We publish it here so that anyone searching for risk in a specific ZIP, city, or county can find authoritative, citable numbers.