CHECK OUT TORNADO ALLEY
Some people have asked if tornadoes appear everywhere in tornado alley. The fact is on all tornado alley maps there are areas that have never had a tornado hit there.
remember, not every city in tornado alley has been struck by a tornado while others have had many tornadoes hit them.
http://www.tornadochaser.net/tornalley.html
First, the idea that a tornado can’t hit a big city is one of those dangerous myths that can be deadly. Similar myths say that a river, a lake, a hill, or some other kind of landscape protect certain places from tornadoes. Strong tornadoes come from huge thunderstorms that go where the upper-altitude winds push them, including across cities. As you note, a tornado hit downtown Nashville, Tenn., earlier this spring. (Information on that and other 1998 twisters is in our weather and climate of 1998 index.)
http://www.usatoday.com/weather/resources/askjack/watorsaf.htm
The downtown areas of “big cities” have had tornadoes on occasion. This past spring, a tornado passed through Miami, Florida before it moved out to sea, disproving the idea that they can’t form in cities. The St. Louis, Missouri and East St. Louis, Illinois areas have had more than their share of tornado strikes to their downtowns.
http://www.tornadoproject.com/myths/myths.htm
Excellent page / description
Tornadoes occur just about everywhere in the world, from India to Australia, and all over the United States, but the most famous and active breeding ground for tornadoes is Tornado Alley. It extends from Texas up through Oklahoma, Kansas and Nebraska to the Dakotas.
http://skydiary.com/kids/tornadoes.html
The National Weather Service confirmed at 5:12 p.m. that a tornado touched down in Bay Ridge, Brooklyn, this morning. The tornado was classified as a 2 on the Enhanced Fujita scale, which goes from 0 to 5. An EF2 tornado consists of winds of 111 to 135 miles per hour.
http://cityroom.blogs.nytimes.com/2007/08/08/brooklyn-storm-is-declared-a-tornado/