9 Aralık 2008 Salı

HURRICANES AND TORNADOES



Two of the most dangerous storms are hurricanes and tornadoes. They are very much feared by anyone who may live in the path of their destruction and cause millions of dollars worth of damage to the life and property every year.

Hurricanes which usually develop between July and October are similar to cyclones and originate over the waters in the Caribbean Sea.They move upwards hitting the mainland of America somewhere in the Gulf of Mexico or the Atlantic Ocean. Once they hit land they carry tremendous power with driving rain and wind. These winds can attain speeds of over 75 mph. And cover an area of 500 miles in diameter. At the center of the storm there is an “eye” with relatively fair weather and warm, dry air aloft.

Tornadoes are violent low-pressured storms with an intense updraft near their center which is capable of lifting quite heavy objects from the ground. A tornado is a dark, funnel-shaped cloud containing violently rotating air. It can pick up trees and cars right into the air and even uplift heavier objects such as homes and railway cars.

Both hurricanes and tornadoes cause millions of dollars worth of damage each year. Today they can be predicted more easily than in the past, but they cannot be stopped or ignored.

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