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Tropical Storms:

Distribution of Storms:

Storms include tropical cyclones, midlatitude storms and tornadoes.
Tropical cyclones (hurricanes in the Atlantic) are violent storms between 200km and
700km in diameter.
They occur in the latitude 520 north and south of the equator.
Once generated, cyclones tend to move westward.
Tropical cyclones or…

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Tropical storm from above






Crosssectional diagram of a Tropical Storm

Causes:
Temperatures above 27C are needed for sufficient evaporation to create a humidity
above 75%. Water also needs to be >60m deep, as storms stir up the water, bringing
cold water from below. The location needs to be at least…

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force brings maximum air rotation. The storms form in low pressure areas where
trade winds converge.
The trade winds converge near the surface causing the warm and unstable air to rise.
The humid (moist) air supplies latent heat energy to the storm and the preexisting
winds feed the hurricane throughout…

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Heavy rain ­ the tropical cyclone can pick up 2 billion tonnes of moisture per day and
release it as rain. This also leads to extensive flooding ­ often well inland.
Tornadoes ­ tropical cyclones sometimes create many tornadoes as they hit land.

Physical and human factors that determine the…

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