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Severe Weather

NCEI Severe weather products provide access to data on destructive storms and other severe weather. They can be used to find detailed information about local, intense, often damaging storms such as thunderstorms, hail storms, and tornadoes, but can also describe more widespread events such as tropical systems, blizzards, nor'easters, and derechos.

Access Tools

Billion Dollar Disasters

Summary of U.S. billion-dollar weather and climate related disaster research, methodology, and data sources.

Regional Snowfall Index (RSI) Interactive Map

The Regional Snowfall Index (RSI) interactive map documents significant snowstorms that impact the eastern two thirds of the U.S. The RSI ranks snowstorm impacts on a scale from 1 to 5, similar to the Fujita scale for tornadoes or the Saffir-Simpson scale for hurricanes.

Interactive Radar Map

The Interactive Radar Map shows supplemental data in support of NCEI's Weather Radar Archive. The tool includes several provides access 1995–present for individual or multiple stations at varying altitudes.

Storm Events Database

The Storm Events Database provides data on high intensity storms, rare or unusual weather phenomena, and other significant weather events.

SWDI Interactive Map

Use the Severe Weather Data Inventory (SWDI) Interactive Map to search and download data for specific locations and time-frames.