A wildfire burning in the hills above Cupertino near the Stevens Creek Reservoir was holding at 150 acres, Cal Fire Battalion Chief Ken McGeever said Thursday evening in an updated report.
"We're trying to hold it on the ridgeline, and we're not out of the woods yet," the battalion chief said. "We'll be out there all night, and out there tomorrow because we're wary that this isn't over yet."
The blaze is burning in the foothills of the Santa Cruz Mountains. Two firefighters have been treated for injuries; one had heat exhaustion and the other had an unidentified injury. Both were in stable condition.
McGeever said that all-night closures were expected for Montebello Road and also for Stevens Canyon Road.
People living in about 25 residences voluntarily evacuated and the staff of Camp Costanoan also agreed to evacuate, the chief said.
The fire started around 11:45 a.m. between state Highway 35 and Stevens Creek Reservoir.
Crews discovered downed power lines near the fire's origin, but the cause of the flames remains under investigation, McGeever said.