1. Oklahoma has experienced more violent tornadoes than any other state, according to data collected from 1950 to 2011.
2. Oklahoma is also among the states with the strongest tornadoes.
3. Oklahoma sits in the middle of “Tornado Alley,” a region where cold air from the Rocky Mountains, moist air from the Gulf of Mexico, and dry air from the desert meet, which can form tornadoes.
4. This is the path of tornados that struck Moore, Oklahoma, in 1999, 2003, and Monday.
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