1. Tri state tornado
Welcome to Nat geo, we are now looking at super cells and tornadoes.
Today’s show we will talk about the tri state tornado. It was the biggest tornado that happened in USA. A tornado is a violently rotating column of air that is in contact with both the surface of the earth and a cumulonimbus cloud. Tornadoes come in many shapes and sizes, but they are typically in the form of a visible condensation funnel, whose narrow end touches the earth and is often encircled by a cloud of debris and dust. Most tornadoes have wind speeds less than 110 miles per hour are about 250 feet across, and travel a few miles before dissipating.

2. Tri-State Tornado
The Tri-State Tornado happened at Wednesday, March 18, 1925, it was the deadliest tornado in U.S. history. With 695 confirmed fatalities, the tornado killed more than twice as many as the second deadliest, the 1840 Great Natchez Tornado. The continuous 219 mile track left by the tornado was the longest ever recorded in the world the tornado crossed from southeastern Missouri, through Southern Illinois, then into southwestern Indiana. While not officially rated by NOAA(The National Oceanic and Atmospheric Administration ), it is recognized by many as an f5(extremely violent tornado).

3. Tri state tornado
The vortex was first sighted at around 1:01 p.m., north-northwest of Ellington, Missouri. The tornado sped to the northeast, killing two and causing $500,000 worth of property damage and the near annihilation of Annapolis, then struck the mining town of Leadanna. In Bollinger County, 32 children were injured when two schools were damaged. Redford, Cornwall, Biehle, and Frohna also were hit by the tornado. At least 11 died altogether in Missouri.

4. Tri state tornado
There has been uncertainty as to whether the event was one continuous tornado or a tornado family..In fact, several other historically very long track tornadoes were subsequently found to be tornado families although in the past several years, some very long track tornadoes and super cells have occurred.

5. Tri state tornado
The tornado crossed the Mississippi River into southern Illinois, hitting the town of Gorham, at 2:30 p.m. Essentially obliterating the entire town, killing 34. Continuing to the northeast at an average speed of 62 miles per hour and up to 73 miles per ,the tornado cut a path almost a mile wide through Murphysboro, De Soto, Hurst-Bush, and West Frankfort. Also affected were Zeigler, and Maunie. The school was hit in the village of Maunie also resulting in the death of one child and the loss of a limb to another. The school was completely destroyed..Within 40 minutes, 541 lives were lost and 1,423 were seriously injured. The village of Parrish was completely destroyed, killing 22. In Murphysboro, 234 were killed, the most in a single city in U.S. history. The tornado proceeded to destroy country areas across Hamilton and White Counties, claiming 65 more residents. In Illinois, at least 613 were killed, the most in a single state in U.S.

6. Tri state tornado
Crossing the Wabash River into Indiana, the tornado struck and nearly totally demolished Griffin, devastated settlement areas, impacted Owensville, then roared into Princeton, destroying half the town. The tornado traveled ten more miles to the northeast before finally dissipating at about 4:30 p.m. around three miles southwest of Petersburg.

7. Physical damage
Human damage
forest
500,000 damage to property
Grass land
695 deaths
Farms
City's
Crops
Machinery
Animals
Schools
Fish in Mississippi river
Fences

8. References
Yahoo
Wikipedia
Nat geo
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