MOORE, Okla. (AP) - Entire neighborhoods are flattened in Moore, Okla., where a powerful tornado struck Monday.
At least 51 people, including 20 children, were killed in the Oklahoma City area, and officials expect the death toll to rise.
Now rescuer workers are searching what's left of Plaza Towers Elementary, where some children were killed, but rescuer workers were seen pulling some children out of the rubble alive.
Oklahoma Gov. Mary Fallin has deployed 80 National Guard members to help with rescue operations and activated extra highway patrol officers. Fallin also spoke with President Barack Obama, who declared a major disaster and ordered federal aid to supplement state and local recovery efforts. Many land lines to stricken areas are down, and cellphone networks are congested.
Meanwhile, forecasters warn there could be other tornadoes overnight in southeastern Oklahoma, north and western Arkansas, parts of southern and central Missouri and a small slice of western Illinois.