A monstrous tornado at least a half-mile wide roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. At least 51 people were killed, and officials said the death toll was expected to rise.

The National Weather Service issued an initial finding that the tornado was an EF-4 on the enhanced Fujita scale, the second most-powerful type of twister.

More than 120 people were being treated at hospitals, including about 50 children. And search-and-rescue efforts were to continue throughout last night.

It has also been reported that the storms caused over 1 billion dollars in damages.