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The formation of tornadoes is complicated.
First, a condition called wind shear, in which the speed or direction of the wind changes with altitude. If the shear is strong enough it can essentially tilt a thunderstorm, this separates the updraft and downdraft of the thunderstorm, preventing them from interfering with one another. This allows the storm to become stronger and last longer.
Additionally, if the wind shear is strong enough it can start the air rolling in what is called horizontal vorticity. This horizontal vorticity can then be turned vertical by a thunderstorm's updraft. When this happens, the thunderstorm may start rotating. The rotation is especially strong in an updraft called a mesocyclone. If the storm intensifies rapidly enough, a relatively warm downdraft called a rear-flank downdraft or RFD can wrap around the bottom part of the mesocyclone. This can then tighten and intensify its rotation and bring it down to the ground to produce a tornado.
Hurricanes and typhoons form by a different mechanism. They start of as ordinary cluster of rain showers and/or thunderstorms that move out over warm ocean water. If the air is moist enough and there is little to no wind shear the storm cluster starts to strengthen as it "feeds" on the warm, moist air. As the storm intensifies it also begins to organize and rotate due to the Coriolis Effect. When the circulation becomes closed the system becomes a tropical depression and is classed as a tropical cyclone. When the maximum sustained winds of the storm reach 39 mph the system becomes a tropical storm and is given a name and when winds reach 74 mph it becomes a hurricane or, if it occurs in the western Pacific Ocean, a typhoon.
There are two major types of cyclones: tropical cyclones and extratropical cyclones. The formation of tropical cyclones is described above.
For information on extratropical cyclones, see the link below.
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Does the catastrophe have weather geologic or hurricanes cause of a tornado?
Tornadoes are produced by weather patterns. This can include hurricanes. Other catestrophes may have different causes.
What are the main causes of natural disasters?
Weather [hurricanes, tornadoes, floods], volcanoes, earthquakes, avalanches, tidal waves (tsunamis), and fire
Do tornadoes cause landslides?
Yes, and some of the largest casualties in hurricanes/typhoons/cyclones have come from landslides caused by very heavy rains. These storms can drop 10-20 inches of rain, or even more, over one area. The irony is that the heaviest rain typically falls in mountainous regions due to orographic lift, and of course these regions are also most prone to landslides. This has been a problem, for example, in Hispaniola as well as parts of Central America (Hurricane Mitch comes to mind).
How are hurricanes tornadoes and typhoons different?
There really isn't a difference between hurricanes and typhoons. They are two names for the same type of storm: a hurricane is one that occurs in the Atlantic ocean or in the Pacific ocean east of the International Date Line. A typhoon is one that occurs in the Pacific ocean west of the International Date Line. However a hurricane is very different from a tornado. A tornado is relatively small, usually not more than a mile wide. Tornadoes usually form over land and can last anwhere from a few seconds to about three hours. A tornado causes damage with wind and flying debris. Tornadoes form from thunderstorms that are usually part of a large-scale storm system. A hurricane is huge, usually hundreds of miles across, sometimes over a thousand. Hurricanes form over warm ocean water and weaken rapidly over land Most hurricanes last a few days. Hurricanes cause damage through a combination of wind, debris, flooding from rain and storm surge, and large waves. A hurricane is itself a large storm system.
How a storm like a hurricane or a tornado speed up the process of erosion?
Hurricanes often cause severe flooding. The water moving over land causes erosion. Waves from hurricanes can erode beaches. The winds in tornadoes have sometimes been known to scour soil away, but this is rare, only occurring in the most violent tornadoes. Both tornadoes and hurricanes can destroy trees and other vegetation, which leaves the soil vulnerable to erosion.
What problems are there in the coral reef?
Hurricanes, Cyclones, Typhoons, Earthquakes, or Plagues are some of the natural causes of dying Coral Reefs
Why do typhoons spin clockwise and hurricanes spin counter-clock wise?
In general, it is Coriolis effect that initiates and maintains the rotation of a tropical cyclone. This phenomenon causes cyclones south of the equator to rotate clockwise, and those north of the equator to rotate anti-clockwise.
How does the Coriolis force effect modify air movement?
In the Northern Hemisphere, the Coriolis force deflects winds to the right. This causes hurricanes and typhoons to spin counterclockwise. In the Southern Hemisphere, the Coriolis force deflects winds to the left. This causes hurricanes and typhoons to spin clockwise.
What causes tornadoes hurricanes cyclones?
Tornadoes form when thunderstorms take on rotation as a result of interactions with wind shear. This rotation can tighten and intensify to produce a tornado. Hurricanes develop when storm systems move out over warm ocean water, organize, and intensify. Cyclones are simply low pressure systems, they are generally simply areas of rising air that is warmer than its surroundings. Air spirals inward cyclonically, that is clockwise in the southern hemisphere and counterclockwise in the northern hemisphere. This is due to the Coriolis effect.
Natural causes that may change an environment on Earth?
forest fire,hurricanes and tornadoes
3 natural causes that make change in the environment on the earth that you can do?
forest fires, hurricanes, & tornadoes
What is both an example of a tornado and hurricane?
There is no such example. Tornadoes and hurricanes have a few things in common, but they are different phenomena with different causes and dynamics. However, many hurricanes have spawned tornadoes. Hurricane Ivan holds the record for having produced 117 tornadoes.
Does the catastrophe have weather geologic or hurricanes cause of a tornado?
Tornadoes are produced by weather patterns. This can include hurricanes. Other catestrophes may have different causes.
What are the top ten accidental causes of death in the US?
The top ten accidental causes of death in the US include motor vehicle accidents, unintentional poisoning (including drug overdoses), falls, accidental drowning, accidental firearm injuries, accidental suffocation, unintentional fires and burns, accidental exposure to smoke or fire, accidental ingestion of objects, and accidental machinery injuries.
What are the main causes of natural disasters?
Weather [hurricanes, tornadoes, floods], volcanoes, earthquakes, avalanches, tidal waves (tsunamis), and fire
Do tornadoes cause landslides?
Yes, and some of the largest casualties in hurricanes/typhoons/cyclones have come from landslides caused by very heavy rains. These storms can drop 10-20 inches of rain, or even more, over one area. The irony is that the heaviest rain typically falls in mountainous regions due to orographic lift, and of course these regions are also most prone to landslides. This has been a problem, for example, in Hispaniola as well as parts of Central America (Hurricane Mitch comes to mind).
What are some disturbences that cause secondary succesion?
Some of the causes are tornadoes, floods, fires, and hurricanes, etc. anything that causes an ecosystem to be destroyed and be totally rebuild-ed is secondary succession!
