The fire was 7% contained as of Thursday morning, according to the Riverside County Fire Department.
The Tenaja fire broke out in La Cresta, California, on Wednesday around 4 p.m.
The fire was first reported when it had grown to 25 acres, forcing road closures. Evacuations began shortly after, with residents in the town of La Cresta beginning evacuations around 6 p.m. Wednesday.
Just before 9 p.m. that night, the fire had grown to nearly 1,000 acres.
All Murrieta schools were closed Thursday, according to the police department.
Hundreds of firefighters and 3 helicopters have been sent to respond to the fire.
The cause of the fire is currently under investigation.