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 March 18, 1925.
A look at the 42 deaths linked to severe storms in the US
A series of storms that sparked tornadoes, wildfires, high winds, and dust storms while barreling across eight states over the weekend have left at least 42 people dead and dozens injured.