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Methodology, regional deep-dives, and how to read tornado risk data.
Tornado risk is local inside the same county because tornado paths are narrow compared with county boundaries. Two neighborhoods can have different path exposure even when they share the same county history.
Tornado Alley and Dixie Alley describe regions with different tornado environments, seasonality, storm modes, and exposure patterns. Property risk can differ because terrain, nighttime storms, building types, and warning conditions vary between the regions.
A tornado risk score summarizes long-run local tornado exposure on a 0 to 10 scale. Read it with EF-rating mix, path exposure, atmospheric favorability, and confidence because tornado paths are narrow and the historical record varies by detection era.
Historical tornado tracks shape long-run risk by showing where tornadoes have occurred, how intense they were, and how paths cluster over time. The record needs detection-era context, especially for older weak tornadoes.
EF ratings estimate tornado intensity from observed damage indicators. For property risk, they help separate weaker damage patterns from violent tornado potential, while building type and what the tornado strikes influence the rating evidence.
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.