Storm Iota leaves over 30 dead in Central America

Iota's death toll rose to over 30 on Wednesday after the storm unleashed mudslides, smashed infrastructure and left thousands homeless in its wake across Central America, revisiting areas devastated by Hurricane Eta just ...

Iota, weakened but deadly, rips through Central America

Storm Iota killed at least ten people as it smashed homes, uprooted trees and swamped roads during its destructive advance across Central America, authorities said, just two weeks after Hurricane Eta devastated parts of the ...

Eta hits Cuba with strong winds, rain

Tropical storm Eta brought strong winds and torrential rain to Cuba on Sunday after having earlier cut a destructive and deadly path through parts of Central America and southern Mexico.

Storm Eta death tolls rise in Mexico, Honduras

Torrential rain and a bitter cold front linked to storm system Eta have claimed at least 20 lives in the southern Mexican state of Chiapas, officials said Saturday.

Storm Eta leaves 150 dead or missing in Guatemala

About 150 people have died or remain unaccounted for in Guatemala due to mudslides caused by powerful storm Eta, which devastated an indigenous village in the country's north, President Alejandro Giammattei said Friday.

Eta back to sea as Central America tallies damages and dead

As the remnants of Hurricane Eta moved back over Caribbean waters, governments in Central America worked to tally the displaced and dead, and recover bodies from landslides and flooding that claimed dozens of lives from Mexico ...

Eta brings heavy rains, deadly mudslides to Honduras

Eta moved into Honduras on Wednesday as a weakened tropical depression but still bringing the heavy rains that have drenched and caused deadly landslides in the country's east and in northern Nicaragua.

Effective government saves lives in cyclones, other disasters

In 2008, Cyclone Nargis killed more than 138,000 people in Myanmar. It was a powerful category 3 or 4 storm at landfall, but tropical storms with similar wind speeds that year resulted in far fewer fatalities in other countries.

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Tropical cyclone

A tropical cyclone is a storm system characterized by a large low-pressure center and numerous thunderstorms that produce strong winds and heavy rain. Tropical cyclones feed on heat released when moist air rises, resulting in condensation of water vapor 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. Tropical cyclones originate in the doldrums near the equator, about 10° away from it.

The term "tropical" refers to both the geographic origin of these systems, which form almost exclusively in tropical regions of the globe, and their formation in maritime tropical air masses. The term "cyclone" refers to such storms' cyclonic nature, with counterclockwise rotation in the Northern Hemisphere and clockwise rotation in the Southern Hemisphere. Depending on its location and strength, a tropical cyclone is referred to by names such as hurricane, typhoon, tropical storm, cyclonic storm, tropical depression, and simply cyclone.

While tropical cyclones can produce extremely powerful winds and torrential rain, they are also able to produce high waves and damaging storm surge as well as spawning tornadoes. They develop over large bodies of warm water, and lose their strength if they move over land. This is why coastal regions can receive significant damage from a tropical cyclone, while inland regions are relatively safe from receiving strong winds. Heavy rains, however, can produce significant flooding inland, and storm surges can produce extensive coastal flooding up to 40 kilometres (25 mi) from the coastline. Although their effects on human populations can be devastating, tropical cyclones can also relieve drought conditions. They also carry heat and energy away from the tropics and transport it toward temperate latitudes, which makes them an important part of the global atmospheric circulation mechanism. As a result, tropical cyclones help to maintain equilibrium in the Earth's troposphere, and to maintain a relatively stable and warm temperature worldwide.

Many tropical cyclones develop when the atmospheric conditions around a weak disturbance in the atmosphere are favorable. The background environment is modulated by climatological cycles and patterns such as the Madden-Julian oscillation, El Niño-Southern Oscillation, and the Atlantic Multi-Decadal Mode. Others form when other types of cyclones acquire tropical characteristics. Tropical systems are then moved by steering winds in the troposphere; if the conditions remain favorable, the tropical disturbance intensifies, and can even develop an eye. On the other end of the spectrum, if the conditions around the system deteriorate or the tropical cyclone makes landfall, the system weakens and eventually dissipates. It is not possible to artificially induce the dissipation of these systems with current technology.

This text uses material from Wikipedia, licensed under CC BY-SA