Mappable History of Tornadoes
Posted March 24, 2009 2:00 p.m. EDT
Updated October 12, 2011 9:51 a.m. EDT
Our friends at the National Weather Service have assembled a mappable archive of all the tornado tracks in the United States, dating back to 1950. You'll need Google Earth to display the data.
What's cool about this is how you can display the tracks. You can display the tornadoes by state, by year, by month, or strength. If you have a quick computer and network connection, you can also pull down all of the tracks and animate them over time.