Media playback is unsupported on your device Media caption Fire survivor: 'I don't have any neighbours any more.'

More than 150 people are missing in wildfires that have ravaged northern California's wine region, police say.

At least 17 people are now confirmed dead and more than 2,000 buildings have been destroyed by the fires which broke out on Sunday.

Eleven of the deaths have been in Sonoma County.

One of the worst affected towns there is Santa Rosa, north of San Francisco, where entire districts have been destroyed.

The Sonoma County sheriff's office said 155 people were still unaccounted for, although that could be due to the chaotic pace of the evacuations.

In neighbouring Napa County, victims included 100-year-old Charles Rippey and his 98-year-old wife, Sarah, police said.

The fires are among the deadliest in California's history and have sent smoke as far south as San Francisco, about 60 miles (100km) away.

Image copyright Google/Getty Image caption Santa Rosa Hilton Hotel

Image copyright Google/Getty Image caption Journey's End Trailer Park in Santa Rosa

California fire chief Ken Pimlott told the BBC on Tuesday that more than 17 fires had burned about 115,000 acres (26,000ha) in the past 24 hours.

He said his officers were trying to track down those unaccounted for but he feared the death toll could rise.

"We're very hopeful that they're just staying with family or friends or left town to get away and we just haven't been able to make that contact," he said.

Media playback is unsupported on your device Media caption Conditions that firefighters and police face in Sonoma County

"But these fires move so quickly - there are just hundreds and thousands of acres out there that we haven't had a chance to pour through and adjudicate."

There was some good news when winds that had been fanning the flames eased, helping firefighters to bring some of the blazes under control.

In Santa Rosa, a Hilton hotel and a mobile home park were destroyed. Tens of thousands of Sonoma County residents have fled, authorities said.

Media playback is unsupported on your device Media caption Residents return home: 'It looks like a nuclear bomb went off'

At least four wineries had suffered "total or very significant losses", Napa Valley Vintners said, with nine others reporting some damage to buildings or vineyards.

More than 91,000 homes and businesses are without power.

California Governor Jerry Brown declared states of emergency in Sonoma, Napa and five other counties.

US President Donald Trump has also approved a disaster declaration, allowing federal emergency aid to be disbursed.