Tornadoes

As of May 31, 2013 there have been a number of recent tornadoes in Oklahoma. The most publicized of these, the Moore EF5 of May 20, traveled about 17 miles.

Nothing is certain, but a major sign is rotation in the clouds during a thunderstorm with a lowering of the cloud base. The stronger the rotation, the more likely there will be a tornado.

When a storm is approaching the most important thing to do is listen to your local radio or television station, or to whatever device carries current, local weather reports. Meteorologists are able to tell when a storm is likely to become violent, and whether it is the type of storm that can spawn a tornado. Without the technology used by the weather service, it is not possible to tell with any certainty whether a tornado is possible in any particular storm.

Oklahoma City has been and continues to be the site of many violent tornadoes. If you are in Oklahoma City, OK, listen to your local TV and radio stations for tornado warnings.

Based on a preliminary count have been 36 tornadoes officially confirmed in Oklahoma so far this year as of May 31. However, there have been numerous reports of tornadoes on May 30 and 31 that have yet to be surveyed and confirmed, and the actual number of tornadoes from these days is not known.

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Slumps most often occur on steep slopes where the ground is saturated with water, making the soil unstable. They typically happen in hilly or mountainous areas, often triggered by heavy rainfall or rapid snowmelt. Additionally, slumps can be influenced by geological factors, such as the type of soil and rock present, as well as human activities like construction or deforestation that destabilize the slope.

The Granbury, Texas tornado of 2013 was a violent tornado, earning a rating of EF4, the second highest on the Enhanced Fujita Scale. It was only the second EF4 tornado of 2013 and, at the time, was the deadliest tornado to hit the U.S. in that year, though it would later be exceeded by the Moore tornado.

Tornadoes cannot form in space. A tornado is a vortex of air. There is no air in space.

There are a few agencies that help with cleanup after a tornado. One of the biggest is FEMA which stands for Federal Emergency Management Agency. Others that help include the National Guard and the American Red Cross.

Grove, OK was recently hit by the tornadoes that went through Oklahoma. Much of that storm's devastation was in Moore, OK, but Grove was hit as well.

EF5 refers to the highest rating on the Enhanced Fujita scale, which runs from 0 to 5.

Most likely yes. The storm Prediction Center is noting the potential for significant tornadoes, particularly in southern Nebraska and northern Kansas. Several tornadoes have already been reported.

No. Tornadoes descend from the base of thunderstorms, usually associated with very tall thunderstorms. The tornado begins in the lower portions of the storm. Furthermore, if the vortex does not touch the ground, it is not considered a tornado.

The Native American Indians survived tornadoes in Oklahoma in the same way any other people survive tornadoes: by recognizing the approach of a violent storm and either getting out of its path or by finding shelter. In previous centuries, without permanent buildings or shelters, native peoples did not experience destruction of property as they do today. The prairies and grasslands of "tornado alley" also have many gulleys, low creeks and the banks of rivers where anyone might be at least partially sheltered from tornadoes. Stories continue to be told about the mid 20th Century, when teachers would lead students out of schoolhouses to shelter in roadside ditches as the storm passed overhead.

Based on preliminary counts, there were 20 tornadoes in Oklahoma in May 2013 as of May 27. The most notable and well-known of these struck the community of Moore, a suburb of Oklahoma City on May 20. Another major tornado struck Shawnee on May 19.

Unfortunately, it is impossible to predict a tornado in advance. Warnings have a lead time measured in minutes.

The largest tornado in the East Jordan area was an F4 storm in 1956 that caused 24 injuries and 2 deaths. Generally, the East Jordan area is relatively free from tornadoes.

Yes. Since offocial records began in 1950 Pittsburgh has been hit by 5 documented tornadoes: an F2 in 1975, an F0 in 1976, an F1 in 1998, an F0 in 2003, and an EF0 in 2007.

On The Fujita scale and the later Enhanced Fujita scale there are 6 categories: F0 to F5 and EF0 to EF5 respectively. The TORRO scale, used by some European countries, has 12 categories from T0 to T11, with every two categories equivalent to one category on the Fujita scale.

It can vary widely. The rating of a tornado is not based on the quantity of damage done by a tornado, but the severity. In other words, its not how many things are damaged; it's how badly damaged they are. In F3 damage, a well constructed house will be destroyed, losing its roof as well as exterior and possibly some interior walls, though at least something is left standing. A well-built house that has been completely leveled is generally considered F4 damage, though for poorly built houses an F3 rating is often appropriate. Depending on where it occurs an F3 tornado may destroy hundreds of houses, just one, or none at all. Tornado ratings do not just use house damage. Some tornadoes have been rated based on damage to trees and power lines.

In 2013, tornadoes hit Oklahoma on January 29, March 30, April 17, April 18, May 15, May 19, May 20, and May 29.

The most significant tornado, the Moore EF5, was on May 20. Another major tornado hit Shawnee on May 19.

Yes. The Phoenix area has had a few weak tornadoes.

Generally speaking, they don't. Most tornadoes last less than 5 minutes. In simple terms, most tornadoes form as a result of complex interactions within a kind of thunderstorm called a supercell. According to Thomas P. Grazulis, a leading expert on tornadoes,here are multiple stages in the process that leads up to, produces, and dissipates tornadoes that often occur in a cyclic fashion. In the few tornadowa that are long-lived, the parent storm enters the tornado-producing stages as a "steady state" rather than as a simple part of a cycle, thus sustaining the tornado.

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