100 years ago, USA's worst tornado killed nearly 700 people: Could it happen again?
The Tri-State Tornado barreled across more than 200 miles, decimating entire towns in and leaving thousands homeless on 1925.
The Weather Channel on MSN26m
On Today's Date: The 1925 Tri-State Tornado, America's Worst
Even 100 years later, the Tri-State tornado is widely considered America's worst tornado. It killed almost 700 in an era without warnings or radar.