Includes bibliographical references (pages 156-157)

The tri-state tornado -- The Joplin tornado of 2011.

The Tri-State Tornado of 1925 was the deadliest tornado strike in American history, tearing through three states and killing 700 people. Almost a century later, the Joplin Tornado was a mile-wide monster that destroyed heart of a vibrant city. The true stories of these two events plus fascinating facts, profiles of tornado scientists and storm chasers.