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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

Is it a good decision to open windows in your house if a tornado is approaching?

Do not even think about opening windows and doors if the tornado is very close. Take shelter where ever possible and do so immediately. No house is worth your life.

No. If the center of a tornado ever passed over your house, the wind and debris it was carrying would already have broken at least a few windows before any significant pressure difference could cause problems. It's not likely that this difference is even enough to do much to a well-built home anyway, especially when most houses have enough openings and vents as it is.

Where do tornadoes occur the most in the US?

The colloquial term is Tornado Alley, generally stretching from Texas to South Dakota and Iowa. There is relatively high tornado activity extending from the Rocky Mountains in the west, to the Appalachian Mountains in the east and from the Gulf of Mexico to southern Canada.

See the related Wikipedia link for a nice map of the area:

Where was the last tornado?

As of the morning of April 9, 2012 the last confirmed tornado was an EF0 near Naples, Florida on April 6. However, several tornadoes were reported in central Texas on April 7 but have yet to be surveyed and confirmed.

What does it mean to debark trees?

Debarking trees refers to the process of removing the bark from a tree trunk. This can be done for various reasons, such as to harvest the bark for medicinal or industrial purposes, to prevent insect infestations, or to promote the drying of the wood for woodworking. However, debarking trees can be harmful to the tree if not done properly.

What states do not have hurricanes tornadoes earthquakes?

Every state gets tornadoes. Pennsylvania and Ohio have even had F4 and F5 tornadoes. The inland states do not get hurricanes.

The Dakotas, Florida, and Michigan have only have a few small earthquakes.

Pennsylvania has had a few earthquakes, but none have been very damaging.

How many mesocyclones produce tornadoes?

Not all mesocyclones produce tornadoes; however, they are often associated with tornado formation. The presence of a mesocyclone is a key indicator for meteorologists to monitor for tornado development.

When was the last time Denver had a tornado?

The last time Denver had a tornado was in 2007. There could have been some early this year but most likely in 2007.

How do you stop a tornado?

You can not stop the tornado, however you should take cover in a basement. If you live in a town with a high water table then you don't have basements and you should take cover in a closet or in a room with no windows.

Is a Tropical storm smaller or larger then tornadoes and hurricanes?

Tropical storms are larger in size than tornadoes but smaller than hurricanes. Tropical storms can span hundreds of miles in diameter, while tornadoes are typically less than a mile wide. Hurricanes are much larger than both tropical storms and tornadoes, with wind speeds exceeding those of a tropical storm and the potential to cause widespread damage over a broader area.

Which of the three types of storms is the most common?

Thunderstorms are the most common type of storm, occurring frequently around the world. They are characterized by thunder, lightning, strong winds, and sometimes heavy rain or hail. Tornadoes and hurricanes are less common but can be more destructive when they occur.

What does a tornado effect?

A tornado can cause destruction by uprooting trees, damaging buildings, and throwing debris at high speeds. It can also result in injuries and fatalities due to its strong winds and flying objects.

Has a tornado ever traveled at 700 mph?

No the fastest a tornado is known to have traveled is 73 mph.

The fastest winds ever recorded in a tornado were just over 300mph, which is about as strong as they get.

What happens before a tornado?

Before a tornado the clouds will often be an unusually greenish/grey and dark color and after hail or heavy rain it might be really calm outside no birds, no wind, no thunder. At night blue or white power flashes which means power lines are being snapped by winds if you got an emergancy weather radio in your basement or cellar than you can always plug that in and listen to the reports. Also the temperature might change to cold or warm sometimes. Their may also be rotating clouds or a wall cloud which means the storm may be strong enough to preduce a tornado and also low rumbling noises that doesn't fade in a few seconds kind of like thunder.

What is the difference between a tornado outbreak and a tornado family?

A tornado outbreak is a series of multiple tornadoes (usually at least six) produced by the same storm system (i.e. a system of multiple storms) in a geographic area in a relatively short period of time (usually 48 hours or less).

A tornado family is a series of tornadoes produced in succession by a single storm as it goes through cycles.

In a tornado outbreak the tornado tracks are scattered across a given area such as a state or several states.

In a tornado family several tornado tracks occur along the same approximate line.

Sometimes there are several tornado families within an outbreak.

How big can tornadoes get?

Very large tornadoes can be well over a mile wide. The largest tornado on record, occurring near El Reno, Oklahoma in 2013, was 2.6 miles wide.

A typical tornado, however, is only 50 to 100 yards wide.

How fast does a tornado travel on ground?

It can range from stationary to over 70 mph. The average is about 30 mph.
The fastest moving tornado ever recorded traveled at 73 mph. Most tornadoes travel at 30-40 mph. Some are nearly stationary.

How fast does wind blow in a tornado?

Wind speeds in a tornado can range from 65 mph to over 300 mph (105 km/h to 480 km/h), with some of the most intense tornadoes exhibiting wind speeds over 200 mph (320 km/h). The speed of wind in a tornado can vary depending on the strength and size of the tornado.

What does the National Weather Service say about a tornado before it happens?

I'm not exactly too sure what they would say but if you turned on your TV at the time I'm sure they would say something like this: "A tornado has been spotted in Oklahoma. Take shelter immediately." They would definitely warn of the on-coming storm.

Even the NWS doesn't know there IS going to be a tornado until it has formed. Whenever weather conditions that may produce tornadoes exist, they issue a "Tornado Watch" for the area. They monitor their equipment (especially the dopler radar) to determine where one MAY be forming and which direction it will travel if it forms. Once a funnel cloud has formed, they issue a "Tornado Warning" and predict it's path.

How do people react to tornadoes?

People have adapted to dealing with tornadoes by building shelters, or finding a safe place within their homes. They have learned to understand the type of weather that is likely to result in tornadoes. They have become accustomed to listening to warnings, and taking them seriously.

Are there tornadoes in NSW?

Yes, although (according to the McGraw-Hill Encyclopedia of Science and Technology) most violent tornadoes are in the US , east of the Rockies. Here's a little information from the Australian Government site: http://www.bom.gov.au/weather/nsw/sevwx/warning_service.shtml and some general tornado information from answers.com - http://www.answers.com/topic/tornado. If you want some pictures of NSW tornadoes - http://australiasevereweather.com/tornadoes_australia.htm

What other areas of the US do tornadoes occur with regularity?

The area with the highest tornado frequency in the U.S. is Tornado Alley. A region stretching across the Great Plains from Texas to South Dakota and Iowa. Another tornado hot spot is in Florida.

Are you tilted toward or away from the sun in February?

This depends on whether you are in the northern or southern hemisphere. The southern hemisphere has its summer solstice (the longest day of the year) in December: after that, the southern hemisphere gradually begins to tilt away from the sun, while the northern hemisphere begins to tilt more towards the sun as it moves beyond winter.

What keeps tornadoes spinning?

Tornadoes spin due to a combination of strong updrafts and wind shear. The updrafts lift warm, moist air, while wind shear causes the air to rotate and tilt. This creates a spinning motion that can evolve into a tornado under the right atmospheric conditions.

In which direction does a tornado spin?

Tornadoes normally rotate cyclonically in direction:

- counterclockwise in the northern hemisphere

- clockwise in the southern hemisphere

But while large-scale storms always rotate cyclonically due to the Coriolis effect, thunderstorms and tornadoes are so small that the direct influence of the Coriolis effect is inconsequential. Supercells and tornadoes rotate cyclonically in numerical simulations even when the Coriolis effect is neglected. Low-level mesocyclones and tornadoes owe their rotation to complex processes within the supercell and ambient environment.

Approximately 1% of tornadoes rotate in an anticyclonic direction. Typically, only landspouts and gustnadoes rotate anticyclonically, and usually only those which form on the anticyclonic shear side of the descending rear flank downdraft in a cyclonic supercell. However, on rare occasions, anticyclonic tornadoes form in association with the mesoanticyclone of an anticyclonic supercell, in the same manner as the typical cyclonic tornado, or as a "companion tornado," either as a satellite tornado or associated with anticyclonic eddies within a supercell.