There are a number of factors including the strength, size, path length, forward speed, and location of the tornado. These play into how bad the damage is and how many people are killed or injured.
Tornadoes vary greatly in strength. Most cause only minor to moderate damage (EF0 and EF1) but a few are strong enough to completely obliterate houses (EF4 and EF5). These tornadoes are often very large and long lives as well, so not only is damage very severe, but it is also often widespread. These tornadoes are the ones that most often kill large numbers of people whereas weak tornadoes rarely kill. A large tornado with a long damage path will affect a larger area and thus cause more damage. If a tornado is fast moving there will be less time to warn people, making it more likely that people will die.
The location is also very important. Many very strong tornadoes have torn across open farmland, causing relative little damage. However, when a violent tornado hits a city, as was the case of Joplin, massive destruction will occur and multiple fatalities are almost guaranteed.
There is a combination of factors that make one tornado more destructive than another..Some tornadoes are stronger than others, winds can be anywhere from 65 mph (causing minor damage) to over 300 mph (total destruction)Some tornadoes are wider than others (ranging from a few yards to over a mile) and so affect larger or smaller areas.Some tornadoes cover greater distances (sometimes only a few hundred feet, other times over 100 miles)Some tornadoes hit more developed area than others.
yes, some tornadoes are relatively small while others are huge
It depends on the location. Tornadoes usually occur in dry areas with alot of dust, such as a prairie
Yes but they are more likley to form in some places than others
Tornadoes can form just about anywhere that gets thunderstorms, though some countries get them more than others. Countries with high numbers of tornadoes include the U.S., Canada, Australia, and Bangladesh.
Tornadoes can form almost anywhere, but some areas get them far more often than others. Some locations, such as Tanner, Alabama have been hit multiple times.
Tornadoes can occur anywhere in New Jersey. That some locations but not others have been struck has simply been a matter of chance.
Tornadoes can occur in most areas, but they occur more frequently in some places thanin others. Tornadoes form best under a given set of circumstances when a mass of cool and/or dry air pushes into a warm, moist unstable air mass with the right setup of wind shear, or a difference in wind speed and dirction with height. This leads to the formation of rotating thunderstorms that can spawn tornadoes. This setup occurs more frequently in some areas than in others.
Exactly how tornadoes form and why some supercells produce tornadoes while others don't is not known. Due to the difficulty of making measurements the internal dynamics of tornadoes are not well understood either, especially at ground level.
In truth, tornadoes can strike virtually anywhere in the U.S. except perhaps northern Alaska, where it is generally too cold for thunderstorms, let alone tornadoes. However, some regions are certainly more prone to tornadoes than others. This is because of the various factors require for tornado formation including wind shear and a collision between air masses of very different temperatures and/or dew points. Certain regions see such favorable tornado-forming factors more often, and to a greater degree than others.
Tornadoes occur more frequently in certain regions due to the specific weather conditions that are conducive to their formation. For example, the central United States, known as Tornado Alley, experiences a high frequency of tornadoes due to the clash of warm, moist air from the Gulf of Mexico with cool, dry air from the north. These conditions create the ideal environment for tornado formation.
Yes. Some tornadoes may last for more than an hour, but such cases are rare. Most tornadoes do not last more than 10 minutes.