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Texas ISD School Guide
Texas ISD School Guide







Short Stories for Teachers

What Is A Hurricane?
By:Alice Kelly

A hurricane is a region defined name for a strong tropical cyclone. A tropical cyclone is a warm-core, low pressure system without any "front" attached, that develops over the tropical or subtropical waters, and has an organized circulation. In the Atlantic/Eastern Pacific Oceans it is known by the name of "hurricanes"; In Western pacific it is called Typhoons and in the Indian Ocean it is known by the name of "cyclones".

There are several favorable conditions that lead to the formation of cyclones such as: Warm ocean waters (at least 80°F / 27°C) throughout a depth of about 150 ft. (46 m), relatively moist air near the mid-level of the troposphere, generally a minimum distance of at least 300 miles (480 km) from the equator, a pre-existing near-surface disturbance, and lastly an atmosphere which cools fast enough with height such that it is potentially unstable to moist convection.

Intense tropical cyclones pose a particular observation challenge, as they are a hazardous oceanic occurrence, and weather stations, being relatively sparse, are not often available on the site of the storm itself. Because of this reason, there are teams of meteorologists that move into the path of tropical cyclones to help evaluate their strength at the point of landfall.

Hurricanes have damaging effects on the environment, life, property and other things. Storm surge and tidal flooding are some of the most devastating and notable effects of a hurricane. Storm surge is the rising wall of water that comes ashore with a land falling hurricane, and is responsible for 90 percent of all hurricane related deaths.

The loss of power and phone service is another annoying and sometimes dangerous effect of hurricanes. Many times the high winds knock down power lines. Hurricanes also make lightning, of course, and sometimes tornadoes. That's a big problem, because if someone gets hurt, you can't call for emergency help. You just have to pray that they will be all right!

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