"Natural disasters like tornadoes destroy, devastate, and alter people's lives forever. Some people chase tornadoes for scientific purposes, while others just want the thrill of facing a twister's dangers. In this book, readers are introduced to the science behind tornadoes and to the people who have risked their lives to help us understand more about them. Graphic organizers and incredible photographs add to this glimpse into one of nature's most terrifying events"

One deadly hour -- Moving in the wrong direction -- Born from thunderstorms -- Tricky to track -- Tornado Alley -- Chasing equipment -- The TIV-2 -- Classifying tornadoes -- Famous chasers -- The NSSL -- Storm smarts.