TornadoScore

About TornadoScore

About TornadoScore: who we are, why this site exists, and how we attribute to PerilScore.

TornadoScore is part of the PerilScore network of peril-specific risk-intelligence sites.

Why this site exists

Most public tornado data is published at the county or state level. TornadoScore publishes tornado risk scores at neighborhood resolution (about 5 km² sample points) so anyone searching for the risk at a specific location can find authoritative numbers.

The scores on this site come from the same data layer used by insurance and risk management professionals. We publish them here because location-specific risk information shouldn’t require a paid product subscription to find.

Who builds and maintains this site

TornadoScore is built and maintained by PerilScore, a property and peril risk-intelligence company. PerilScore operates the broader risk-modeling platform and the peril-specific sites in this network.

How to use it

For neighborhood-level risk research, browse the location pages.
For data sources, the modeling approach, and limitations, see the methodology page.
For a property-specific risk score that incorporates construction, safe-room presence, and protection class, use the free PerilScore app.

Attribution & Contact

Risk scores powered by PerilScore. Visit perilscore.com for the full platform, API access, and commercial-use licensing. For questions about this site or the data, contact us through perilscore.com.

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.

Frequently asked questions

Where does the tornado risk score come from?

Every score is computed from decades of public weather data (NOAA Storm Events tornado records, including EF-rating, path length, and width) using physics-based probability modeling.

Does this match the SPC tornado climatology?

Our model uses the same underlying NOAA records as the Storm Prediction Center’s climatology, but produces a single comparable 0–10 risk score per location designed for risk modeling and insurance use.

How is Dixie Alley risk different from Tornado Alley?

Dixie Alley (AL, MS, TN, AR) has a higher proportion of long-track and nocturnal tornadoes, which raises the risk score even where overall tornado counts are similar.

Want the full picture for a specific property?

The scores on this site show the representative tornado layer for a local area. Enter a street address to add building age, construction type, roof details, occupancy, surroundings, and property-level context.