WHAT IS A TORNADO?: aviolently rotatingcolumnofair that extends from a thunderstorm to the ground.
WHAT WILL YOU SEE?: Darkgreenish sky, black storm clouds, hail, funel decending from cloud.
Texas holds the record for annual averagae # of tornadoes ...120
U.S has the most tornadoes year then the restof the world combined.
WATERSPOUTS: weak twisters that formover water. they sometimes move inland and form tornades
DUST DEVILS: small rapidly rotating columns of air that are made visible by the diust and dirt they pick up. They are not asociated with thunderstorms.
TORNADO RATING/ WIND SPEEDS AND DAMAGE
F0: 75MPH... some chimney damage, branches broken, sighn board damage.
F1 73-112MPH... auto pushed off road, foundations overturned, peeled roof off of houses.
F2 113-157MPH... roof torn off, large trees smaped, light objects turn into missiles.
F3 158-206MPH...some walls torn off, well constructed houses overturned, most trees uprooted.
F4 207-260MPH... housesleveled, cars thrown, large missiles
F5 261-MPH... strong frame houses lifted off foundation, car sized missiles fly over 320ft.
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