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USA TORNADO MAPS 1950-2008 (GIS DATABASE)
USA Tornado Maps (GIS Database)
Shapefile format GIS database from 1950-2008. Covers the United States, Puerto Rico, and the U.S. Virgin Islands.
Tornado touchdown points, with year, location, fatalities, date, damage, and scale.
Easy to use, supplied with base data for reference such as state boundaries and cities. Created using reliable government sources.
Supplied with Quantum GIS (QGIS) an open source GIS for you to view the data with. Windows version and open source code included.
Shapefile download option $99 without GIS software.