Flames overtake a structure as nearby homes burn in the Napa wine region.

Photo: Josh Edelson/AFP/Getty Images

A Cazadero firefighter struggles to protect a home from catching fire in Coffey Park.

Photo: Kent Porter/AP

Smoke obscures the sun as fire from the Santa Rosa and Napa Valley moves through the area.

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Flames burn tree and brush along the freeway. Gusts of wind, up to 70mph in some places, have spread the fire.

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The Signorello estate winery burns in the Napa wine region.

Photo: Josh Edelson/AFP/Getty Images

Traffic jams form as people flee from Santa Ana, while winds blow fire and smoke toward them.

Photo: Robyn Beck/AFP/Getty Images

Firefighters try to extinguish a fire at a home in Anaheim Hills

Photo: Jeff Gritchen/AP