What percentage of the world's tornadoes occur in the US?
About 75% of recorded tornadoes strike the United States. This is misleading however, as many countries do not keep records of their tornadoes. The actual number of tornadoes outside the U.S. is not known.
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Tornadoes most often occur when strong thunderstorms interact with wind shear. One thing that tornadoes must have is a pattern. They form when changes in wind speed and direction create a horizontal spinning effect in a storm cell. The result is it is then tipped straight up by rising air moving up …through thunderclouds The United states averages 1,200 tornadoes each year. (MORE)
The greatest number of tornadoes occur in a region called TornadoAlley, which extends from Texas to Iowa.
The central United States has a region called Tornado Alley covering the great plains. Here a number of conditions come together that are ideal for tornado formation. Warm moist air from the Gulf of Mexico frequently moves over the region from the south. This collides with cool air from Canada an…d dry air from the Rockies. This collisions of air mass is often triggers thunderstorms, often very strong ones. The region also frequently gets strong wind shear. This can tilt storms, causing them to further intensify, and can also start them rotating. Tornadoes develop from this rotation. Another factor is a layer of very stable air that forms about a mile off the ground, called a cap. This cap holds back thunderstorm development, causing instability to build up underneath it. If a developing storm is strong enough it can break through the cap, and if it does it will develop rapidly and become very intense. (MORE)
Tornadoes are most likely to occur in a region known as Tornado Alley, which stretches across much of the Great Plains.
Per the CIA World Factbook 6/19/08: the U.S. population is 303,824,646 the world population is 6,677,563,921 That means that the U.S. accounts for 4.55% of the world population.
The USA uses 26% of all the world's energy. It would be a safe approximation to say we use 26% of any one energy source as well. I would figure the margin of error in that approximation to be less than 5%. The margin of error might be higher for nuclear and biomass (i.e. wood) fuels and less for f…ossil fuels since we could be expected to use a higher proportion of the high tech fuels and a lower proportion of the low tech fuels. (MORE)
Tornadoes occur mostly in Tornado Alley. Tornadoes occur mostly inTornado Alley, a region that stretches from Texas to Iowa with thehighest activity in Texas, Oklahoma, and Kansas. However, all 50states, including Alaska and Hawaii, have had tornadoes.
The area of the US where tornadoes occur most often is located inthe central part of the country in an area called "Tornado Alley."This area includes Kansas, Arkansas, and Nebraska.
The strongest tornadoes in the United States have mostly occurredon the Great Plains and in the Deep South.
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.
Tornado season stretches from March through July, with May being the peak month. However, tornadoes can and do occur in all 12 months.
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: (MORE)
The deadliest tornado to hit the U.S. occurred on the afternoon of March 18, 1925. This tornado tore across parts of Missouri, Illinois, and Indiana, killing 695 people. It is known as the Tri-state tornado.
The deadliest tornado outside of the U.S. and in fact the deadliest tornado anywhere occurred in central Bangladesh on April 26, 1989 striking the cities of Daulatpur and Saturia, killing over 1300 people.
Because the cold, dry air from Canada meets warm, moist air from the tropics, producing very strong thunderstorms. On top of that, the upper atmosphere hasn't fully warmed up yet. This, combined with a warming lower atmosphere, is conducive to thunderstorms as well. Finally, strong upper level winds… create wind shear the gives storms the rotation they need to produce tornadoes. (MORE)
According to data from the past 30 years about 2.3% of tornadoes occur in January, at least in the U.S.
The number varies widely, but on average the United Statesexperiences between 1,200 and 1,300 tornadoes per year.
Yes, generally, they are, though that does not mean that Canada does not get violent tornadoes.
They don't. The US has 40 times the number of tornadoes that England has, and they tend to be much more intense- less than 10% of English tornadoes are strong, 42% of US tornadoes are strong storms.
They have happened in all 50 states, but they mostly occur on the Great PLains
Tornadoes occur just about everywhere in the U.S. except northern Alaska. The greatest number occur on the Great Plains, earning that region the name Tornado Alley.
While that can occur in many parts of the U.S. winter tornadoes most often occur in the Gulf Coast states.
The most valuable tool is doppler radar, which can detect the rotation in a thunderstorm that can produce a tornado, and even the rotation of the tornado itself. The introduction of dual polarization in these radars can be used to detect debris lifted into the air.
In the Tornado Alley, which consists of the Great Plains, or the states of Texas, Oklahoma, Arkansas, Kansas, Nebraska, North and South Dakota. Tornadoes can and will occur in other states/areas of this country and others around the globe.
Tornadoes have recurred in all 50 U.S. States, though they are most common one the central plains and in the south. Tornadoes can occur most parts of the world except for polar regions and a few areas of extreme desert. Countries with high tornado rates include Australia, India, Bangladesh, and Arge…ntina. (MORE)
In short, the Central United States has just about the perfectclimate for producing tornadoes. The long version: Most strong tornadoes in the U.S. occur betweenthe Rockies and the Appalachians, particularly on the Great Plainsin a region called Tornado Alley. In the region between the twomountain ra…nges cold air from Canada collides with warm, moist airfrom the Gulf of Mexico, forming a cold front. The cold front liftsthe warm, moist air, sparking the development of thunderstorms. InTornado Alley a mass of dry air from the Rockies may also move in,forming a dry line. This can also generate thunderstorms and can beeven more conducive for the formation of strong tornadoes than acold front. Activity is especially intense at the triple point,where a dry line intersects a cold front Other key factors come into play as well. There is a layer ofstable air about 6,000 feet above the ground called a cap, whichinitially prevents thunderstorms from developing. This can lead togreat instability as the lower atmosphere heats up throughout theday. When the storms break through the cap the atmosphere willcontain an enormous amount of latent energy to power them. Finallythere is wind shear, a change in wind speed and direction withaltitude. This strengthens the storms by separating the updraftfrom the downdraft so they don't interfere with each other andeffectively increases the vertical pressure gradient, strengtheningthe updraft even more. It also give the storms the rotation theyneed to produce tornadoes. When all these ingredients come together, conditions are ripe foran outbreak with strong tornadoes. Such a setup, however, is rareoutside the U.S. (MORE)
Tornado season begins in March and ends in July. April is historically the deadliest month, although May has more tornadoes. However, tornadoes hit the U.s. in all months. Tornado season is simply more active.
They don't only occur in the U.S. Tornadoes have been recorded on every continent except Antarctica and some of the deadliest tornadoes have occurred in Asia. However, the U.S. does have the highest number of tornadoes of any other country. This is due mostly to the climate setup, which has a near p…erfect setup for combining colliding air masses, instability, and strong wind shear to create strong, rotating thunderstorms called supercells. These storms produce the vast majority of tornadoes. Additionally, the U.S. keeps detailed records of its tornadoes, something most countries don't do. (MORE)
While the actual number of tornadoes that occur each year can't be measured, the United States sees an average of 1,000 tornadoes in a year. Most tornadoes hit between 4 and 9 pm in the evening.
The region is prone to collisions of air masses with a very large difference in temperature and/or moisture content. Such collisions produce strong thunderstorms. When wind speed and direction changes with altitude ( a condition called wind shear) can can cause the storms to intensify even further a…nd sometimes start to rotate. Such powerful rotating storms, called supercells, are what produce the majority of tornadoes. (MORE)
Yes. Tornadoes can occur almost anywhere that gets thunderstorms. Tornadoes have been recorded on every continent except Antarctica.
It is during the spring that there are may collisions between warm air and cold air. This causes thunderstorms which in turn can produce tornadoes.
In the past 10 years (counted as 2002 to 2011 as data for 2012 so far is preliminary) there have been 13,411 confirmed tornadoes in the U.S.
There were 6 EF5 tornadoes in the U.S. in 2011 which which is thesecond highest number for F5/EF5 tornadoes in one year, just behindthe record of 7 set in 1974. EF5 is essentially the same rating asF5, only on an enhanced scale.
Tornadoes occur in the U.S. in all seasons, but they are most common in the spring.
I'm writing a report on fossil fuels and i found out that almost three-fourths of the world's energy relies on fossil fuels
The infamous Waco tornado occurred on May 11, 1953. It is unknownwhen a tornado might hit Waco again.
Tornadoes can occur almost anywhere, but areas of high tornadoactivity other than the United States include southern Canada,India and Bangladesh, Australia, Argentina, South African, andparts of northern Europe.
About 2.6% of tornadoes in the United States occur in February.Global statistics are not available.
The Midwest sees a high frequency of tornadoes because of its idealclimatic setup. In the spring storm systems cause warm, moist airfrom the Gulf of Mexico to collide with cool air from Canada anddry air from the Rockies, resulting in the formation of strongthunderstorms. About a mile off the ground… a layer of stable airholds thunderstorm activity back, allowing instability to buildunderneath it. As a result when the storm break through the cap theinstability will be enormous, leading to explosively powerfulthunderstorms. At the same time wind speed and direction varieswith altitude, which sets these storms rotating and alsostrengthens the updraft. This rotation combined with strongthunderstorm updrafts can then produce tornadoes. (MORE)
About 25% of reocrded tornadoes take place outside the UnitedStates. However, the actual percentage is probably much higher. TheUnited States is one of only a few countries that keeps detailedtornado records. As a result, there a likely hundreds, possiblythousands of tornadoes that occur every year …outside the U.S. thatare never recorded. (MORE)
Tornadoes can occur in all parts of the United States exceptnorthern Alaska. The majority occur between the Rockies and theAppalachians, particularly on the Great Plains and in the DeepSouth.
Fire tornadoes, more properly called firewhirls, can occur in anyarea prone to major fires.This would include most of theSouthwestern United States.
Since 1950, the US has recorded more than 57,000 tornadoes.However, since we missed many of the weaker ones, the number isprobably closer to 80,000.
Tornadoes occur in virtually all parts of the US, but are most common on the central plains. The Great Plains see a high frequency of tornadoes because of their ideal climatic setup. In the spring storm systems cause warm, moist air from the Gulf of Mexico to collide with cool air from Canada and dr…y air from the Rockies, resulting in the formation of strong thunderstorms. About a mile off the ground a layer of stable air holds thunderstorm activity back, allowing instability to build underneath it. As a result when the storm break through the cap the instability will be enormous, leading to explosively powerful thunderstorms. At the same time wind speed and direction varies with altitude, which sets these storms rotating and also strengthens the updraft. This rotation combined with strong thunderstorm updrafts can then produce tornadoes. (MORE)
Official records indicate 75 to 80 percent of the world's tornadoesoccur in the U.S. This statistic, however, is highly inaccurate asit only counts recorded tornadoes. The U.S. portion of theworld's tornadoes is probably much smaller. The United States is awealthy nation with plenty of resources t…o track down almost everytornado that touches down within its borders, including minor onesthat do no more than topple a few trees. Many other countries donot conduct tornado surveys, resulting an many, if not mosttornadoes going unrecorded. Tornadoes that touch down in veryremote areas are also unlikely to be recorded. (MORE)
Tornadoes are more likely to occur on the central plains and in theDeep South. These regions are known as Tornado Alley, and DixieAlley with another area of high activity in Florida.
Generally, the highest number of tornadoes in the U.S. occur on theGreat Plains, so much so that the region is sometimes calledTornado Alley. The region experiences as many as 800 tornadoes peryear.
"Fire tornadoes", more properly called firewhirls, can occur withalmost any intense fire. They are generally most common in areasprone to major wildfires, such as California.
Tornadoes occur in many areas around the world by no regionexperiences more tornadoes than the central United States. No onereally knows for sure how many there are in the US each year, butit is estimated that over 1,000 tornadoes occureach year in the US, although many go undetected and unreporte…d. (MORE)