A massive winter storm swept across Northern California on Sunday, bringing severe flooding. /CFP Photo

Homes and vehicles were partially submerged by the overflowing Petaluma River. /CFP Photo

At least a dozen county roads were closed, as well as city roads in parts of the region. /CFP Photo

“We haven’t had a winter like this in 10 years,” said Tony Fuentes, a meteorologist with the National Weather Service. /CFP Photo

Residents received automated phone and text messages advising them to evacuate their homes and seek shelter elsewhere. /CFP Photo