Stunning Map Shows Tornadoes' Historic Marks | Wonderful, Wacky Weather |

A gleaming map that plots the paths tornadoes have taken across the United States over the course of nearly six decades has become something of an Internet sensation — a welcome, yet unexpected turn of events for the map's creator.

"It caught on, and I've been very surprised and happy with the response," said John Nelson, the user experience and mapping manager for IDV Solutions.

The Lansing, Mich.-based company turns data into interactive graphics for both the government and private-sector clients, but Nelson, who has a background in geography and design, said the tornado-track map was kind of a side project — something he did for fun.

Via Irina Radchenko