Over 500 homes were evacuated late Saturday due to the Shirley Fire in the Sierra Nevada in California, northeast of Bakersfield.

The wildfire is only about 5 percent contained and has grown to 810 acres, officials said. 

Accuweather.com Meterologist Michael Doll said conditions will remain dry in the area.

"During the daytime, the relative humidity is generally going to be 10-20 percent," Doll said. 

Doll added that by Wednesday winds could gust up to 30 mph, which could spread the wildfires and make firefighters' efforts more difficult.

Forest Service spokeswoman Cindy Thill said she expects that the fire has grown considerably since Saturday evening. She said that authorities have walked the streets with bullhorns knocking on doors warning people to get out.

Additionally, residents in the Kern River Valley with health problems were urged to stay indoors. 

Emergency notification system calls were made to residents in the surrounding areas. 

"We want residents to be aware of the possibilities," U.S. Forest Service officals said in a news release. 

Kern County Fire Department spokesman Leland Davis said there's about 450 firefighters trying to battle the flames. The fire was first spotted Friday, and the cause is being investigated.

Despite the fire in such close proximity, Cheryl's Diner in Kernville was busier than ever, according to a waitress' report to the Bakersfield Californian.

The waitress said visibility is reduced, but people can still see through it.

"It's the talk of the whole valley," Michelle Walker, the waitress, said. "It's all anybody is talking about." 

She said her customers aren't quite sure what to think of the fire or what to do next.

"Everybody's clueless. And if anyone knew, it'd be us. We're gossip central." 

More than 660 wildfires have already broken out this year in southern California. Gov. Jerry Brown linked the fires to climate change and believes this year will be the "worst" wildfire season in California history.