Firefighters are battling a brush fire that has sparked in Riverside Saturday, bringing smoke across San Diego County.
The fire, named the Chaparral fire, is now at 1,500 acres and 13% contained, Cal Fire San Diego reported.
Cal Fire San Diego said all evacuation orders and warnings would remain in place overnight until further notice.
Cal Fire Riverside said the fire was 1,200 acres and 0% contained Saturday night.
An evacuation warning was in place for residents North of Tenaja Road, West of Cali Pino/Gallop Lane, South of Hombre Lane, and West of Cleveland National Forest.
About 10 homes in San Diego County are under evacuation orders, the San Diego County Sheriff's Department told NBC 7.
The North County Fire Protection District tweeted, "avoid using Tenaja Truck Trail in Del Luz, as it is being used as an evacuation route for people living near Tenaja Truck Trail."
The fire was first reported to be 250 acres with 0% containment at 3:15 p.m. on Saturday.
It quickly grew to 450 acres and was still 0% contained around 4:30 p.m.
Cal Fire, Riverside County Firefighters along with Cleveland National Forest and local government agencies are on the scene of the chaparral fire near Tenaja Road and the Cleveland Forest Road.
According to Cal Fire, the fire is pushing north out of San Diego County as it was originally 90% in San Diego and 10% in Riverside County.
Heat Advisory in San Diego
The Chaparral fire started when San Diego County was in a heat weather advisory. Cal Fire PIO Thomas Shoots says the heat could be fuel for a fire.
"When these heat advisories come across it really helps drive these fires and it's a huge concern for us," said Shoots.
Shoots says California is in peak fire season and the dry grass and brush are at "critically dry levels" ready to burn.
"What kind of defines our peak fire season is that these fires are gonna start and they are gonna carry and are gonna have the potential to get very large very quickly," said Shoots.
San Diego resident Duane Hill told NBC 7 there is always concern regarding heat advisories.
"There's always a concern because fires can break out at several different places and do we have enough resources to take care of all of those," said Hill.
Fire safety experts say clearing brush like this that can be thick and dry around your property, also known as the defensible safe, is important.
Shoots explained to NBC 7 what those rules for clearing defensible space are and why it is important.
"Yeah so in San Diego County we go 50 and 100, so zone one is zero to 50 we really want as cleaned up as possible we don't want anything carrying right up to their door," said Shoots. "The 50 to 100 you can have grass but it should be watered you shouldn't have any dead material in that whole 100 feet and any kind of trees touching your house, it is gonna have the potential to carry fire up onto your roof."
North County resident Debra Butler said she is staying vigilant and following that advice.
"My husband is real vigilant about going out and taking care of things, also we are very vigilant. We live in an HOA [and] tell them about that 10 feet clearance and we make sure it's that way all the time," said Butler.