The Riverside County Fire Department said the Sanderson fire was reported at 1 a.m. near La Borde Canyon Road and the Jack Rabbit Trail.
No injuries or structural damage were reported.
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Shortly before 9 a.m., an evacuation warning was issued for an area that included North Gilman Springs Road and South Timothy Lane, south of Highway 60. Less than a dozen homes were affected by the warning, officials said.
The evacuation warning was cleared immediately before 1 p.m.
By 1 p.m., the county fire department announced that the fire had spread to 1,933 acres as firefighters stopped progress and reached the 10% limit.
“Firefighters had a hard time accessing the fire because their location was in deep, rugged terrain,” Cal Fire said in a statement.
There were at least 130 firefighters on the scene, the agency said. Helicopters and fixed-wing aircraft were seen dropping water and Phos-Chek.
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