This map shows U.S. tornados and available tracks from 1950 to 2011. The content is time enabled. The tornados and tracks are classified by the force of their winds using the Enhanced Fujita scale (http://www.spc.noaa.gov/faq/tornado/ef-scale.html). Pop-ups contain relevant tornado information including date, time, Enhanced Fujita scale rating, fatalities, injuries, tornado track length and tornado width.
This map shows all tornadoes and available tracks from 1950 to 2011. This gives users a comprehensive look at the dispersion of tornadoes across the United States. Tornado tracks display the total length of tornado paths and are only shown at the largest extents. Tornado strength shown by its fujita scale, are displayed by color and point size. Stronger storms are shown with larger symbols and brighter colors. Pop-ups contain relevant tornado information including date, time, fujita scale, fatalities, injuries, tornado track length and tornado width.  All data was provided by the National Oceanic and Atmospheric Administration.
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{'Title': 'US Historical Tornado Tracks', 'Author': 'Esri', 'Comments': 'This map shows U.S. tornados and available tracks from 1950 to 2011. The content is time enabled. The tornados and tracks are classified by the force of their winds using the Enhanced Fujita scale (http://www.spc.noaa.gov/faq/tornado/ef-scale.html). Pop-ups contain relevant tornado information including date, time, Enhanced Fujita scale rating, fatalities, injuries, tornado track length and tornado width.', 'Subject': 'U.S. tornados and tracks from 1950 to 2011.', 'Category': '', 'AntialiasingMode': 'None', 'TextAntialiasingMode': 'Force', 'Keywords': 'tornados,tornadoes,NOAA,United States,tornado tracks,Enhanced Fujita Scale,wind speed'}
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