By: Megan Blevins Science Shepard

What Are Tornadoes?  A violent column of air extending from a thunderstorm to the ground  Rotating winds  Appearance of a funnel shaped cloud Weather Wiz kids, ©2010, Cyrstal Torandoes, © 2013http://

What Conditions Cause Tornadoes?  Thunder storms  Warm moist air from Gulf of Mexico and cool dry air from Canada  Air masses meet crating instability in the atmosphere Weather Wiz Kids, tornado.html,©2010, Crystal Summertime, and the twisters are missing‘, missin, ©2013, UCAR missin

How Long Do Tornadoes Typically Last  Last from several seconds to more than an hour  Most don't exceed 10 min. About Tornadoes, © 2013, Weather Underground Tornado factshttp://tornado-facts.com/interesting-tornado-facts/, © 2013

When do Tornadoes happen?  Have occurred in every month  At all times day or night  Typically on an unseasonably warm and sultry spring afternoon  Between 3 p.m. and 9 p.m. About Tornadoes, © 2013, Weather Underground Severe weather and tornadoes, © 2010

What Kind Of Damage Can Tornadoes do?  May 22, 2011, Joplin MO, $2,800,000,000  Almost half of all tornadoes fall into the F1 or "moderate damage" category. These tornadoes reach speeds of m.p.h. and can overturn automobiles and mobile homes, rip off the roofs of houses, and uproot trees. Only about 1 percent of tornadoes are classified as F5, causing "incredible damage." With wind speeds in excess of 261 m.p.h., these tornadoes are capable of lifting houses off their foundations and hurling them considerable distance The 10 Costliest U.S. Tornadoes since in 2011 Dollars © 2013

Interesting Facts  The deadliest tornado out break in U.S. history occurred on march 18. 1,925 people killed, 2,027 injured in Missouri, Illinois, and Indian Torna do Facts, © 2013 ○ Why franklin facts, ©2013