CLEARLAKE OAKS, Calif. – State and local firefighters contained a wildland fire that threatened homes in the Spring Valley area on Monday, several hours after they had put out a fire on the hillsides above Lucerne.

The fire in a field in Spring Valley was reported shortly before 5 p.m. in the 2700 block of Shasta Road, according to radio reports.

Initial reports stated that witnesses believed the fire could have begun due to a blown transformer, but that has not yet been confirmed as the cause.

The fire units on scene from Northshore Fire and Cal Fire reported finding power lines down, blocking Shasta Road. The Lake County Sheriff's Office responded to help shut down the roadway.

Lake County Fire also sent resources at Northshore Fire's request, according to radio reports.

Cal Fire air tankers and a helicopters worked the scene before Cal Fire's dispatch indicated that two of the tankers needed to be diverted to a new fire in Humboldt County.

Northshore Fire Chief Jay Beristianos said the fire burned a total of an acre and a half of vegetation and destroyed a pump house.

The fire's forward progress was stopped within a few hours of dispatch, with Beristianos reporting that full containment was expected at about midnight.

The fire led to a power outage in Spring Valley that impacted 569 customers as of 6:30 p.m., according to Pacific Gas and Electric. As the evening went on, customers gradually had their power restored, with PG&E estimating that the outage would be over by 3 a.m. Tuesday.

Also on Monday, firefighters wrapped up work on a wildland fire that had begun at around 12 a.m. and burned in the area of Highway 20 east of Rosemont Drive in Lucerne.

Northshore Fire Battalion Chief Mike Ciancio said that fire burned a total of 11 acres, a size estimate rolled back significantly from the 40 acres that had been reported from the scene early Monday.

Ciancio said Northshore Fire units cleared the scene at about 6:30 a.m. Monday, with Cal Fire keeping firefighters in place to work on mop up into Monday afternoon.

A portion of Highway 20 – which had been closed for several hours because of the fire – had reopened by late Monday morning, according to the California Highway Patrol.

Ciancio said the fire's cause is under investigation by Cal Fire.

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