Natural Phenomenon ( Tornado)
TORNADO Tornado is aviolently rotating column of air that extends from a thunderstorm to the gorund. It's often portended by a dark, greenish sky. Black storm clouds gather. Tornado is one of the most violent event in the world and it always cause at the United States, for Indonesia tornado is one of the rare phenomenal events because of the wet tropical climates. And now it's tornado fact time : A tornado forms when changes in wind speed and direction create a horizontal spinning effect within a storm cell. This effect is then tipped vertical by rising air moving up through the thunderclouds. Funnels typically grow about 660 feet (200 meters) wide. Tornadoes move at speeds of about 10 to 20 miles (16 to 32 kilometers) per hour, although they've been clocked in bursts up to 70 miles (113 kilometers) per hour. Most don't get very far, though. They rarely travel more than about six miles (ten kilometers) in their short lifetimes. Tornadoes are classified a...
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