Floods and mudslides hit California

Two towns in northern California's wine-making region have been turned into virtual islands by record-breaking floodwaters, say authorities.

Sonoma County authorities, about 70 miles (110km) north of San Francisco, said about 3,600 people were evacuated after the Russian River flooded.

Torrential rain and snowfall has triggered the worst deluge in over 20 years, emergency officials say.

The towns of Monte Rio and Guerneville are currently only accessible by boat.

"You cannot get into or out of town," Sonoma County officials said on Wednesday night in a mandatory evacuation order. "Guerneville is officially an island."

Around 2,000 homes and businesses are currently underwater, Ms Khan said, adding that only around half of the town's 4,500 residents complied with the official warning to leave.