- Late 2005 – Tornado History Project concept is born when Josh Lietz simultaneously stumbles upon:
- Text archive of raw historical tornado data published by the SPC (Storm Prediction Center.)
- New Google Maps application
- Early November 2006 – Tornado History Project goes online, making historical tornado data freely available to the public in an easy to read, user-friendly, and searchable format.
- November 2006 – Tornado Map completed
- February 2007 – Added ability for users to add links, personal histories, etc., to any tornado
- March 2007 – Tornado map icons updated to visually distinguish tornadoes by Fujita rating
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1st August 2007, 03:49 pm