Tornadoes are one of the world many natural diasters. A tornado starts in a severe thunderstorm called a supercell. A supercell can last longer than a regular thunderstorm. The same property that keeps the storm going also produces most tornadoes. The wind coming into the storm starts to swirl and forms a funnel. The air in the funnel spins faster and faster and creates a very low pressure area which sucks more air into it. Tornadoes most often form when cold dry polar air meets warm moist tropical air. They are most commonly, and most violentsly found east of the Rocky Mountains. In an average year, 800 tornadoes are found nationwide, resulting in 80 deaths and over 1,500 injuries. The most violent tornadoes often have winds at 250 mls/hour.
In my opinion, tornadoes are a very scary kind of storm. We Minnesotans have experienced multiple tornadoes, and many of them have been quite destructive. Ive known people whos houses have been destroyed because of them, or have gotten hurt because of them. Tornadoes need to be properly prepared for so these kind of disasters can be prevented. In the past, we have been ok, but its always good to be safe.
Author Unknown. "Tornadoes....Nature's Most Violent Storms" NASA
<http://www.nssl.noaa.gov/edu/safety/tornadoguide.html>
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