Topic Media - Archived

What is a tornado?

Description

Introduction to tornadoes

Caption

Although tornadoes occur in many parts of the world, these destructive forces of nature are found most frequently in the United States east of the Rocky Mountains during the spring and summer months. In an average year, 800 tornadoes are reported nationwide, resulting in 80 deaths and over 1,500 injuries. A tornado is defined as a violently rotating column of air extending from a thunderstorm to the ground. The most violent tornadoes are capable of tremendous destruction with wind speeds of 250 mph or more. Damage paths can be in excess of one mile wide and 50 miles long. Once a tornado in Broken Bow, Oklahoma, carried a motel sign 30 miles and dropped it in Arkansas! This is an image of the Seymour, TX tornado of April 10, 1979.

Credit

NSSL Photo Library

Topic Filename Media Filename

topics/tornado.top

topics/Seymour.jpg

Source URL

 

More Info URL

http://www.nssl.noaa.gov/NWSTornado/