There have been tornadoes in every land country and the United States has the largest number of tornadoes. There are also many opportunities for tornadoes in Canada, Mexico, Britain, Italy, Australia, New Zealand, Japan and India. China's tornadoes mainly occur in south China and eastern China, and it often appears on the Xisha islands in the South China Sea.
Some climatologists calculate and find that the energy released by a tornado in raging within an hour interval is equivalent to 8 to 600 times of engergy of Hiroshima atomic bombs, so this energy will definitely cause unaccountable damage to the affected areas.
The destruction of buildings by strong tornadoes is serious, even devastating. Under tornadoes, the roof of the house will fly like a glider. Once the roof is swept away, the rest of the house falls apart. If a weak man is attacked, it will be like a broken kite, dying or injuring.
The United States is the country where tornadoes happen most frequently in the world, with an average of 100,000 thunderstorms and 1,200 tornadoes per year and 50 people die of it. The vast areas of the Midwest and south are best known as tornado alley.
On March 18, 1925, a strong dragon tornadoe appeared in the United States, killing 680 people and injuring 1,980. On March 26, 1967, a strong dragon tornado appeared in the Shanghai, destroying more than 10,000 houses and uprooting or twisting 22 high-voltage electric wire towers, which were twice as strong as 12 winds. On April 3, 1974, there was a tornado in the southern United States with the speed increases from 185 km per hour to 555 km per hour, wiping away 239 people, injuring more than 4000 people and more than 24000 suffered from loss of varying degrees and caused loss of about $700 million.
On May 27, 1999, at least 32 people were killed and dozens injured in a massive tornado in four counties in central Texas, including the capital Austin and other 4 counties. More than 50 houses collapsed in the town of Jarrell, which is in 40 miles north of Austin and more than 30 people died. The devastated area was 1,600 metres long and more than 180 metres wide.
On March 2, 2012, the state of Alabama and Tennessee in the south of America suffered from a tornado and at least two tornadoes struck the northeastern part of the states. The two tornados attacked Huntsville at around 9:30am according to the local time, about 10 minutes apart. In Alabama, tornadoes damaged many homes and blowed down lots of trees, causing 4 injuries.
In Capsaw, about 16, 000 metres from Huntsville, Alabama Ramstone prison was also damaged by a tornado. The prison is a maximum-security prison with 2,100 inmates, 200 of whom are in isolation.
In addition to Alabama, more than 20 people were injured in a tornado in Chattanooga, Tennessee. The local government also confirmed that several houses were damaged.
On February 28, 2012, a tornado killed 13 people in Kansas, Missouri, Illinois and Tennessee.
On May 20, 2013 in the afternoon according to local time, a strong tornado attacks suburb of Oklahoma City, central Oklahoma and at least 91 people were killed and 233 injured. A primary school in the area was flattened, with 24 children trapped in the rubble. The hurried and swift tornado kills tens of thousands of people every year. The United States accounts for more than half of the thousands of tornadoes that occur globally each year. For this purpose, to explore the mystery of the tornado and do a good job in forecasting and forecasting is the first task for mankind to defend ourselves and overcome natural disasters.
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