Table of Contents Tornado 4 How Tornadoes Form 10 Measuring Tornadoes 18 Before and After 26 Disastrous Tornadoes 32 Predicting the Storm 39 How You Can Help When Disaster Strikes 45 Glossary 46 Index 47 Show What You Know 47 Websites to Visit 47 About the Author 48
Tornado A thunderstorm blasts rainwater against the window Hail falls from the sky and lands with a bounce A dark twisting shape drops from the gray-black cloud Time to take cover it’s a tornado 4
A tornado is a column of air that rotates powerfully and drops from a thundercloud to the ground Not every storm produces tornadoes Storms vary in the amounts of rain hail lightning and winds they produce Some spin out tornadoes Large tornadoes can have winds as fast as 300 miles 483 kilometers per hour They blow trees from the ground lift cars and damage buildings and roofs 5
