This afternoon in Oklahoma:

A massive tornado with winds of up to 200 miles per hour devastated the Oklahoma City suburb of Moore on Monday, killing at least 37 people as it tore up entire tracts of homes, two schools and a hospital, leaving a wake of tangled wreckage.

The death toll of 37 was expected to rise, said Amy Elliott, chief administrative officer of the Oklahoma chief medical examiner’s office. Some 20 to 30 school children were missing and feared dead beneath the rubble, KFOR television reported, citing unnamed officials from the scene.

Rescue workers raced against the setting sun to find survivors in Oklahoma as the dangerous storm system threatened as many as 10 U.S. states with more twisters.

Police and fire crews pulled third-graders from the devastated Plaza Towers Elementary school in Moore, a KFOR television reporter said from the scene, and aerial video showed teams sifting through the rubble left behind.