The best example of a primary source Ellis could use for Information about a tornado that happened yesterday an Interview with a person who witnessed the tornado
Tornadoes form from severe thunderstorms in warm, moist, unstable air along and forward of cold fronts. Such thunderstorms also may generate large hail and destructive winds. When intense springtime storm systems produce large, stubborn areas that support tornado development, major outbreaks can occur.
The EF Scale is the traditional way to measure tornadoes based on wind damage. The original Fujita Scale (or F Scale) was created by Dr. Theodore Fujita. All tornadoes, and other severe local windstorms, were given a number according to the most intense damage caused by the storm.
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