how do tornados form?

Question

that basicly says it all

Answer 1

Check out this website. It will give you all the info that you wanna know about tornados.

Answer 2

Many tornadoes, including the strongest ones, develop from a special type of thunderstorm known as a supercell. A supercell is a long-lived, rotating thunderstorm 10 to 16 km (6 to 10 mi) in diameter that may last several hours, travel hundreds of miles, and produce several tornadoes. Supercell tornadoes are often produced in sequence, so that what appears to be a very long damage path from one tornado may actually be the result of a new tornado that forms in the area where the previous tornado died. Sometimes, tornado outbreaks occur, and swarms of supercell storms may occur. Each supercell may spawn a tornado or a sequence of tornadoes.

The complete process of tornado formation in supercells is still debated among meteorologists. Scientists generally agree that the first stage in tornado formation is an interaction between the storm updraft and the winds. An updraft is a current of warm, moist air that rises upward through the thunderstorm. The updraft interacts with the winds, which must change with height in favorable ways for the interaction to occur. This interaction causes the updraft to rotate at the middle levels of the atmosphere. The rotating updraft, known as a mesocyclone, stabilizes the thunderstorm and gives it its long-lived supercell characteristics. The next stage is the development of a strong downdraft (a current of cooler air that moves in a downward direction) on the backside of the storm, known as a rear-flank downdraft. It is not clear whether the rear-flank downdraft is induced by rainfall or by pressure forces set up in the storm, although it becomes progressively colder as the rain evaporates into it. This cold air moves downward because it is denser than warm air. The speed of the downdraft increases and the air plunges to the ground, where it fans out at speeds that can exceed 160 km/h (100 mph). The favored location for the development of a tornado is at the area between this rear-flank downdraft and the main storm updraft. However, the details of why a tornado should form there are still not clear.

Answer 3

There are two types of land tornadoes, supercellular and landspout. These two form in different ways.

Supercellular tornadoes form from supercell thunderstorms which are defined as containing a rotating updraft, or mesocyclone. These thunderstorms develop their rotation from wind shear in the atmosphere which is the change in wind speed and/or direction with height. Atmospheric environments that are very unstable and have both wind and directional wind shear are likely to result in supercellular thunderstorms. This rotation in the storms somehow leads to the development of tornadoes. There a several theories as to why this happens. There are things that occur in the storm that are often seen with tornado development and certain flows and rotations in the environment around the storm that are ingested by the storms rotating updraft that lead to tornadoes.

Landspout tornadoes are formed when a rapidly developing storms updraft stretches and therefore strengthens any rotation in the air it is ingesting.

Answer 4

Tornados come from the energy released in a thunderstorm. As powerful as they are, tornados account for only a tiny fraction of the energy in a thunderstorm. What makes them dangerous is that their energy is concentrated in a small area, perhaps only a hundred yards across. Not all tornados are the same, of course, and science does not yet completely understand how part of a thunderstorm's energy sometimes gets focused into something as small as a tornado.

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Answer 5

In Kansas they form from the cool dry air from the Rockies meeting the moist warm air from the Gulf of Mexico. Sometimes during the day when this combination is occurring, the wind will blow sounding like waves coming in from the ocean. Other times the weather will be very hot and humid.