TORNADO.

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Tornadoes A tornado is a violently rotating column of air (vortex) in contact with the ground and a cumulonimbus cloud Tornadoes are capable of inflicting.
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Presentation transcript:

TORNADO

INFORMATIONS A tornado  is a violently rotating column of air that spins while in contact with both the surface of the Earth and a cloud or, in rare cases, the base of a cumulus cloud. They are often referred to as twisters, whirlwinds or cyclones ,although the word cyclone is used in meteorology to name any closed low pressure circulation. Tornadoes come in many shapes and sizes, but they are typically in the form of a visible condensation funnel originating from the base of a huge storm cloud, whose narrow end touches the earth and is often encircled by a basal cloud of debris and dust. Most tornadoes have wind speeds less than 110 miles per hour (180 km/h), are about 250 feet (80 m) across, and travel a few miles (several kilometers) before dissipating. The most extreme tornadoes can attain wind speeds of more than 300 miles per hour (480 km/h), are more than two miles (3 km) in diameter, and stay on the ground for dozens of miles (more than 100 km

SOME PLACES WE SEE TORNADOS Tornadoes have been observed and documented on every continent except Antarctica. However, the vast majority of tornadoes occur in the Tornado Alley region of the United States, although they can occur nearly anywhere in North America. They also occasionally occur in south-central and eastern Asia, northern and east-central South America, Southern Africa, northwestern and southeast Europe, western and southeastern Australia, and New Zealand. Tornadoes can be detected before or as they occur through the use of Pulse-Doppler radar by recognizing patterns in velocity and reflectivity data, such as hook echoes or debris balls, as well as through the efforts of storm spotters.

THE BIGGEST TORNADO EVER Deadliest single tornado in world history On April 26, 1989 in Bangladesh massive tornado took at least 1,300 lives. Deadliest single tornado in US history The Tri-State Tornado of March 18, 1925 killed 695 people in Missouri (11), Illinois(613), and Indiana (71). The outbreak it occurred with was also the deadliest known tornado outbreak, with a combined death toll of 747 across the Mississippi River Valley

PHOTOS

THANKS FOR YOUR ATTENTION BY NICK GLAVAS B1