GGS 411 - Found Map 1

This is a screenshot of the Smithsonian's interactive tornado map, showing all tornadoes in the United States since 1980.  The actual map is found here, if you want to play with it.  I know I spent a good fifteen minutes messing around with it.

First off, there's tons of data on this map.  I mean there is over thirty years worth of data displayed on my computer screen, and it isn't a large screen.  The interface is intuitive- simply click a year to see display its tornadoes and their data.  The buttons that you click make up a histogram that shows the pattern of tornado activity over time, too.  In general, this is just a very simple, easy to use map that shows an extremely large amount of data.