Texas authorities are assessing the devastation following a deadly explosion at a fertilizer plant on Wednesday.
The blast, which hit the small farming community of West, was so strong that it measured as a magnitude 2.1 earthquake.
Authorities say between 5 and 15 people were killed and more than 160 have been injured.
Homes and businesses were flattened in a five block radius and some residents describe it 'like a nuclear bomb.'
"We drove to see the fire and right when we turned the corner, about four or five blocks, I guess, the explosion occurred," said resident Jill Jenkins. "It was bad. It was very loud. It was like a bomb went off, and you still weren't really sure what exactly it was."
"I thought it was lightning at first," another resident said. "Because there was a big flash and it sounded like thunder, but when I realized the roof caved in, I thought that can't be lightning."
Crews are combing through rumble and the Texas National Guard has sent nearly two dozen troops to the site to monitor air quality.
Forecasters say a storm system heading into the area on Thursday could hamper recovery efforts.
Wind gusts up to 60 km/h are forecast through the afternoon hours, which is a big concern for firefighters working to contain the flames.
Lightning and hail could also become problematic, especially for those left without a home.
The massive blast forced the evacuation of about half of the town of about 2,800 people.
Officials continue to investigate the cause.
With files from CNN