Deadly tornado ranks among the most powerful; images from aftermath
The Oklahoma tornado that leveled a community and killed dozens was even more powerful than first thought. Tuesday, the National Weather Service upgraded the rating on Monday's deadly twister to E-F 5. That's the most powerful rating, with wind speeds of more than 200 miles per hour. The tornado hit the city of Moore, a large suburban area of Oklahoma City and killed at least 24 people, including nine children. Rescuers are using search dogs and infrared technology to find survivors among acres of debris.