Tuesday, June 12, 2012

Hurricanes&Tornados

Hurricanes are extremely strong storms and often happen in the Caribbean. They cause huge waves, and heavy flooding and can be hundreds of miles across. In 1998, Hurricane Gilbert produced 160 mile an hour winds. It killed 318 people, and destroyed much of Jamaica. Tornadoes or ‘twisters’ are very strong spinning winds. They can move objects as big as a car and can blow buildings down.



A tropical cyclone is a storm system characterized by a low pressure center and numerous thunderstorms that produce strong winds and flooding rain. A tropical cyclone feeds on heat released when moist air rises, resulting in condensation of water vapour contained in the moist air. They are fueled by a different heat mechanism than other cyclonic windstorms such as nor’easters, European windstorms, and polar lows, leading to their classification as “warm core” storm systems.



A tornado is a violently rotating column of air which is in contact with both the surface of the earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. Tornadoes come in many sizes but are typically in the form of a visible condensation funnel, whose narrow end touches the earth and is often encircled by a cloud of debris.

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