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Tornadoes

A tornado or twister is a violent, rotating column of air which typically has a speed ranging from 177 km/h to over 480 km/h. This devastating windstorm is usually characterized by its funnel-shaped cloud that extends toward the ground.

8,901 Questions

How did human respond to joplin tornado?

There was a massive response first to find people, both living and dead. Federal and non-government agencies brought food and supplies to people. The people of Joplin themselves helped each other considerably in treating the injured and rebuilding.

Are there any warnings of a tornado in Berwyn pa?

Berwyn, PA can get tornadoes and thus tornado warnings. Answers.com cannot provide real-time information on tornado warnings. For that information you should go to the official website of the National Weather Service. For potential weather emergencies you should purchase a battery-powered weather radio.

What conditions must exist for a tornado to form?

The formation of tornadoes is complicated.

First, you need thunderstorms, then you need 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.

Does Rochester MN get tornadoes?

Yes. Tornadoes can occur anywhere in Minnesota. Rochester has had several tornadoes. The most notable was an F5 that struck on August 21, 1883, killing 37 people.

Do tornadoes destroy trailers?

They can. Trailers a not a well-built as most houses and so are more easily destroyed. That said, some weak tornadoes will damage trailers but leave them mostly intact.

Can tornadoes make another tornado?

Yes, in some instances one tornado may spawn a smaller satellite tornado.

Are waterspouts usually more dangerous than tornadoes?

No, in fact, they are much less powerful. ----- A waterspout is a tornado that forms over water instead of land. Unless you are on water, in its path, a tornado would be worse, because more people live on land.

Does density have to do with tornadoes forming?

Density is not a direct factor in the formation of tornadoes. Tornadoes form from the interaction of warm, moist air near the surface and cool, dry air aloft, creating instability in the atmosphere. Wind shear and other atmospheric conditions play a more significant role in tornado formation than density.

How many tornadoes occurred in 2000?

Global data is not available, but the US had 1075 recorded tornadoes in 2000.

Where is one of the best places to seek protection durng a tornado?

The safest place to be during a tornado is in a basement or storm cellar.

How can tornadoes lift houses?

Generally only the strongest tornadoes, those rated EF4 and EF5, can lift houses. In a tornado air spirals upward rapidly, which is why they can lift objects into the air. The stronger the wind, the heavier things it can lift. In the strongest tornadoes this upward component of the wind is strong enough to tear houses from their foundations and lift them into the air. A tornado of EF3 or perhaps even EF2 intensity can lift a house that is not properly anchored.

Are hurricanes worse than tornadoes or are tornadoes worse than hurricanes?

This cannot be answered simply, as both hurricanes and tornadoes vary greatly in how bad they are. The impacts of both tornadoes and hurricanes can range from negligible to devastating. That said, the very worst hurricanes can be far deadlier and more destructive than the worst tornadoes.

Why do tornadoes need thunderstorms to create?

In simple terms, only a thunderstorm can concentrate the energy needed to form a tornado. Most tornadoes from from a thunderstorm with a rotating updraft. Others develop from interactions between turbulence and a non-rotating updraft. Other varieties of whirlwind can develop without thunderstorms, but they are not nearly as strong as tornadoes.

Do tornadoes move north to south?

A tornado can move in any direction, but the most common direction of travel is southwest to northeast. Southeast-moving tornadoes are not uncommon.

What is the name of the cloud that brings quick thunderstorms and tornadoes?

Thunderstorms and tornadoes, whether they are quick or not, are the product if cumulonimbus clouds.

Is Ontario in tornado alley?

No. While Ontario does get tornadoes, it is nowhere near Tornado Alley. Tornado Alley is farther west.

How many tornadoes has Georgia had in the past five years?

As of April 28, 2015 Georgia has had 125 tornadoes in the past 5 years.

What are some enviromental clues that a tornado is coming?

Direct warning signs of a tornado include rotation in the clouds and a persistent lowering of the cloud base. Many people associate hail or green skies with tornadoes. These signs do indicate a severe storm, but not necessarily tornadoes.

Why are tornadoes the most dangerous natural disaster?

Tornadoes can strike quickly and sometimes without warning.

What type of storms are usually associated with tornadoes?

Tornadoes are most often associated with a rotating thunderstorm called a supercell. Supercells are the most powerful thunderstorms on Earth, capable of generating very large hail and straight-line winds in excess of 100 mph in addition to tornadoes.

Where do you go in case of tornado if you live in an upstairs apartment?

Your best option would be to seek shelter in a room or hallway on the lowest floor of the building, rather than in the apartment itself. If you do not have access to any areas downstairs, take cover in a room or closet as close to the center of the building as possible. You want to put as many walls between you and the outside as you can.

What type of clouds does a tornado form in?

Tornadoes are a product of severe thunderstorms, which take the form of cumulonimbus clouds.

What are the basic ingredients needed for a tornado to form?

The basic ingredients needed for tornadoes are:

  • Instability, which is needed for thunderstorms to form.
  • A lifting mechanism to trigger storm development, usually in the form of a cold front.
  • Wind shear, which sets the thunderstorm rotating.
  • One the storm develops and has a well-defined rotation you need a downdraft to turn the rotation into a tornado.

Where is the United States do many tornadoes occur?

Tornadoes occur most frequently in an area known as Tornado Alley, which includes parts of Texas, Oklahoma, Kansas, and Nebraska. Southeastern states like Alabama and Mississippi also experience a high frequency of tornadoes.