A mix of volunteers and first responders are combing through debris in an Oklahoma City suburb looking for survivors.
The city of Moore, Okla., was hit by a mile-wide tornado on Monday afternoon.
The National Weather Service says the tornado that hit Moore had wind speeds up to 200 miles per hour, with a preliminary classification of EF-4 on the enhanced Fujita scale.
People wearing neon-green vests were joined by residents in the search through rubble. Neighborhoods are flattened and homes blown apart.