Tornado Dangers and Warning Signs

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In the aftermath of hurricanes, tornadoes become a major concern for those living in the path of the storm. While tornadoes usually accompany thunderstorms, tropical storms and hurricanes can also result in tornadoes in affected areas. Tornadoes can occur anywhere in the world, but most are observed in the Eastern part of the U.S. (east of the Rocky Mountains). Each year, about 800 tornadoes are spotted in the U.S. that lead to an average of 1,500 injuries and 80 deaths, according to the U.S. Centers for Disease Control and Prevention (CDC).

The most dangerous aspect of a tornado is the updraft, or the force that lifts upward inside the funnel cloud. This force can lift vehicles, houses, trees, and other large items or structures and move them hundreds of feet away. Tornadoes can move at speeds greater than 250 miles per hour and leave a path of destruction that averages 9 miles long by 200 yards wide. Severe tornadoes cause even more extensive damage.

Local weather services issue a tornado watch is issued when weather conditions favor the formation of tornadoes. The watch is upgraded to a tornado warning when a funnel cloud is seen or detected by radar.

Tornadoes can strike rapidly, and you may not observe the typical funnel cloud before a tornado hits.

For more information about tornadoes, please read the following articles:

REFERENCE: CDC.gov. National Vital Statistics Report. Deaths: Final Data for 2005.
<http://www.cdc.gov/nchs/data/nvsr/nvsr56/nvsr56_10.pdf>


Last Editorial Review: 1/27/2011