MARIPOSA, Calif. -- Nearly 40 large wildfires were burning Monday night in the West. One of the most aggressive is in the foothills of Yosemite National Park.

The ferocious Detwiler fire, just outside Yosemite National Park, exploded overnight -- doubling its size and burning more than 45,000 acres.

Flames leapt across Highway 49, closing the road.

Dramatic picture provided by Fireline Media shows massive amount of flames crossing Highway 49 in California.

More than 2,000 firefighters have been battling the massive blaze since Sunday. But as the wind pushed the fire closer to a community of 1,500 homes late Tuesday, California's Gov. Jerry Brown declared a state of emergency. Thousands were ordered to evacuate the town of Mariposa. Main Street became a ghost town.

A chimney stands amidst remains of a home destroyed by the Detwiler fire in Mariposa, Calif., on Wed., July 19, 2017. Reuters

Mia Glor, who owns the Mariposa Lodge, spoke to CBS News amid the wildfire.

"Everyone is scared. You would never think something like this would happen in your town," Glor said.

The fire has knocked out some power lines, and threatens more in Yosemite during this peak tourist season. Record rain that ended the drought has also fueled the fire -- creating dense vegetation that has burned with lightning speed.

Cal Fire's Lucas Spillman speaks with CBS News' Mireya Villarreal CBS News

Cal Fire's Lucas Spillman explains what about the fire blew out of control in the last 24 hours.

"As you can see with the dead trees and the brush it's just a combination of everything," Spillman said. "It's a powder keg and that's why it's just continuing to burn quicker than we can contain it."

More than a dozen choppers and air tankers are making constant water and retardant drops, but Cal Fire has requested even more help to try and get ahead of the fire.

Dozens of firefighters were standing at the ready Wednesday evening and pulled their lines toward homes. They are ready to protect people as well. One homeowner refused to leave despite evacuation orders.