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Published on Jun 20, 2012
Sourced from sixty-one years of NOAA data, tornado tracks are flip-booked through 61 years in 30 seconds. Brightness of the track is tied to tornado severity. Check the source for high resolution visualizations by season, severity, or all together for a revealing illustration of regional risk: uxblog.idvsolutions.com/2012/05/tornado-tracks.html