Tri-State Tornado

Tornado is a devastating atmospheric phenomenon affecting ecosystems and people's lives. A tornado is a pillar of a violently rotating air that comes into contact with the ground, hanging from a cumulus cloud or hanging under a cumulus, and usually appears as a funnel-shaped cloud "(Meterology, 2011). Three-state tornado is the most deadly tornado in America. A total of 219 miles in Missouri, Illinois and Indiana, killed 695 people, with an estimated loss of 16.5 million dollars (National Weather Service, 2011).

The most extreme tornado in history occurred on March 18, 1925. "Three State Tornado" accelerated 338 kilometers (219 miles) through Missouri, Illinois and Indiana. The tornado destroyed the communication of the area, and warning to the next town was almost impossible. The Three Kingdoms tornado caused 695 deaths in 3.5 hours. Wind is usually measured from the perspective of wind shear. Wind shear is the difference between wind speed and wind direction within the set distance in the atmosphere. Wind shear is measured both horizontally and vertically. Wind shear is the number of meters per second multiplied by the height of kilometers. Under normal conditions the wind speed in the atmosphere will be faster and higher wind shear will occur if the altitude is high.

The most deadly tornado in American history is invisible. In 1925, Three States Tornado ran a mile wide at speeds of 60 to 70 miles per hour in Missouri, Illinois and Indiana, traveling 220 miles twice the normal tornado. It lacks classical funnel clouds, but damage is miserable: roughly 2,000 people were injured, property loss totaled more than $ 16 million, and over 700 people died. The case also holds a known record of deaths from the vast majority of tornados in one city or town, at least 234 people died in Murphysboro, Illinois.

Historically the most recordable tornado was a three-state tornado roaring on March 18, 1935 in Missouri, Illinois, and Indiana. Tornado did not have a ranking of size in that era, but it may be F5. . It has the fastest forward speed of the longest path length (219 mile; 352 km), the record of the longest duration (about 3.5 hours), and an important tornado (73 mph; 117 km / h) anywhere on Earth It is. . In addition, it is the most deadly tornado in the history of the United States (695 deaths). Tornado was also the most expensive tornado in history (not adjusted for inflation), but other years passed other years unless the population changes over time. Today it will be ranked third if the cost is normalized by asset and inflation.

Tornado disasters that hit the southern part of the United States included Great Natchez Tornado in May 1840. This is the second most fatal thing in the history of the United States, following the tornadoes of the three states. Other occurrences included the occurrence of the Tupelo-Gainesville tornado in April 1936, the occurrence of a tornado in the southeastern part of 1908, and the occurrence of a tornado in Candlewood Park in 1966. Super break in 1974 seriously affected Alabama and Kentucky. The tornado occurrence on Super Tuesday in 2008 was the most deadly tornado in the United States in 23 years. 58 people in the state of Tennessee and Kentucky in Arkansas died and was particularly seriously damaged. Ultimate explosion in 2011 destroyed most of the southern area, 348 people died.