Tuesday, October 20, 2009

F5 Tornadoes




F5 Tornadoes
F5 Tornado

F5 tornadoes are classified by 261-318mph winds. They are known to cause substantial damage; cars become flying objects, trees can uproot and debark, homes can be demolished and/or disintegrated, and they can can have a continuous damage path more than 90 miles long (150 kilometers) and perhaps a kilometer wide. Such powerful tornadoes can exist for up to three hours, compared to a small tornado lasting three minutes or less!
F5 Tornado


Large tornadoes, classified as F4 and F5 , are only 2% of all tornadoes categorized as "violent" and not "weak."These strong tornadoes account for nearly 70% of the deaths caused by tornadoes. Tornadoes produce the strongest winds in
nature! The Fujita Intensity Scale, or F/scale, is a generally used guide to rate tornado force.


5.)Earth Science text book