Photos: Major tornado outbreak in Oklahoma

Science

1 A tornado moves past homes in Moore, Okla. on Monday, May 20, 2013. A monstrous tornado roared through the Oklahoma City suburbs, flattening entire neighborhoods with winds up to 200 mph, setting buildings on fire and landing a direct blow on an elementary school. 
2 This combination of Associated Press photos shows left, a neighborhood in Moore, Okla., in ruins on Tuesday, May 4, 1999, after a tornado flattened many houses and buildings in central Oklahoma, and right, flattened houses in Moore on Monday, May 20, 2013. Monday's powerful tornado in suburban Oklahoma City loosely followed the path of a killer twister that slammed the region in May 1999. 
3 A woman carries her child through a field near the collapsed Plaza Towers Elementary School in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. 
4 A child calls to his father after being pulled from the rubble of the Tower Plaza Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile wide with winds up to 200 mph roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. 
5 A child is carried from the rubble of the Plaza Towers Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile wide with winds up to 200 mph roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. 
6 A woman is pulled out from under tornado debris at the Plaza Towers School in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. 
7 A boy is pulled from beneath a collapsed wall at the Plaza Towers Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. A tornado as much as half a mile wide with winds up to 200 mph roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on the elementary school. 
8 The Moore Medical Center and vehicles lay damaged after a tornado moves through Moore, Okla. on Monday, May 20, 2013. 
9 A child is pulled from the rubble of the Plaza Towers Elementary School in Moore, Okla., and passed along to rescuers Monday, May 20, 2013. A tornado as much as half a mile wide with winds up to 200 mph roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. 
10 Moore police dig through the rubble of the Plaza Towers Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. A tornado as much as half a mile wide with winds up to 200 mph roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. 
11 A tornado moves through Moore, Okla. as northbound traffic on Interstate 35 stops at Indian Hills Road on Monday, May 20, 2013. 
12 Philip Gotcher stands in the rubble of his house after a powerful tornado ripped through the area on May 20, 2013 in Moore, Okla. 
13 Damaged vehicles are piled up in front of the Moore Warren Theater after a powerful tornado ripped through the area on May 20, 2013 in Moore, Okla. 
14 A Goodwill donation station is surrounded by debris after a powerful tornado ripped through the area on May 20, 2013 in Moore, Okla. 
15 The hood of car is wedged into the front window of the Moore Medical Center after a powerful tornado ripped through the area on May 20, 2013 in Moore, Okla. 
16 Piles of debris lie around a home destroyed by a tornado May 21, 2013 in Moore, Okla. 
17 Debris lies around Moore Cemetery after it was damaged by a tornado May 21, 2013 in Moore, Okla.