Terrible Tornadoes! The Most Violent Atmospheric Storms!

  • Tornadoes are whirling winds that form when a column of cold air sinks down from a thundercloud, while warm air is rising around it.
  • Larger tornadoes' bases can get up to 300 ft long, but only last for about an hour.
  • “You need warm, moist air from the Gulf of Mexico and cool, dry air from Canada. When these two air masses meet, they create instability in the atmosphere.” Says http://weatherwizkids.com/weather-tornado.htm
  • Tornadoes form in a low pressure system.
  • Did you know that the US gets about 1,200 tornadoes each year?
  • Tornadoes can spin up to 350 miles per hour.

Tragic Tornadoes That Have Happened in The Past

The Tornado Outbreak! (2011)

  • This tornado started on April 27, 2011
  • 327 people were killed in 24 hours.
  • It went through the South (Alabama, Georgia, Tennessee, Mississippi) and wrecked havoc.
  • This tornado was spinning about 200 mph.  
  • No recorded data for the cost of damage caused by this storm.

Tri State Tornado (1925)

  • Started on March 18, 1925
  • Record for longest continuous track of 219 miles.
  • Lasted for 3.5 hours which is a record.
  • The winds speeds were up to 300 mph
  • Traveling at 73 mph (average 62 mph)
  • 695 killed, More than 2000 injured
  • Went through Illinois, Missouri, Indiana
  • No recorded data for cost of storm damage.
This is a photo of the Tri State Tornado in Desoto, Illinois

Easy Steps on How to Stay Safe During a Tornado

  1. Find a place without windows, a storm cellar, basement, closet
  2. Stay away from objects that can fly around and can easily hurt you
  3. If outside, go to a ditch or low lying area
  4. Cover head and neck with arms

Some things that other people have made so we stay safe during Tornadoes

  • Sirens
  • A "safe room." It is a place where you have the least amount of windows and not very many objects that can fly around.
  • There are special news stations/radio stations to tell us warnings in our area for tornadoes.


Low Pressure System: A whirling mass of warm, moist air that generally brings stormy weather with strong winds. When viewed from above, winds spiral into a low-pressure center in a counterclockwise rotation in the Northern Hemisphere.


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