WATSONVILLE, CALIF. -- A Northern California agricultural community famous for its strawberry crop was forced to evacuate early Saturday after the Pajaro River's levee was breached by flooding from a new atmospheric river that pummeled the state.

Across the Central Coast's Monterey County, more than 8,500 people were under evacuation orders and warnings Saturday, including roughly 1,700 residents -- many of them Latino farmworkers -- from the unincorporated community of Pajaro.

Officials said the Pajaro River's levee breach is about 100 feet (30.48 meters) wide. Crews had gone door to door Friday afternoon to urge residents to leave before the rains came but some stayed and had to be pulled from floodwaters early Saturday.

First responders and the California National Guard rescued more than 50 people overnight. One video showed a member of the Guard helping a driver out of a car trapped by water up to their waists.

"We were hoping to avoid and prevent this situation, but the worst case scenario has arrived with the Pajaro River overtopping and levee breaching at about midnight," wrote Luis Alejo, chair of the Monterey County Board of Supervisors, on Twitter.

Alejo called the flooding "massive," saying the damage will take months to repair.

The Pajaro River separates the counties of Santa Cruz and Monterey in the area that flooded Saturday. Floodwaters that got into the region's wells might be contaminated with chemicals, officials said, and residents were told not to drink or cook with tap water for fear of illness.

Officials had been working along the levee in the hopes of shoring it up when it was breached around midnight Friday into Saturday. Crews began working to fix the levee around daybreak Saturday as residents slept in evacuation centers.

Oliver Gonzalez, 12, told The Associated Press that he, his mother and his aunt were rescued around 5 a.m. Saturday in Parajo. He grabbed his laptop, cellphone and some important documents but so much was left behind in their rush to leave.

"I'm kinda scared," he said several hours later from an evacuation center in nearby Watsonville. "My mom's car was left in the water."

Anais Rodriguez, 37, said first responders knocked on her home's door shortly after midnight. Her family packed about four days' worth of clothing and drove out to safety. She and her two children, her husband and her parents -- along with their dog, Mila -- arrived at the shelter about an hour later with few answers about what this would mean for their community going forward.

Gov. Gavin Newsom's office on Saturday said it was monitoring the situation in Pajaro.

"Our thoughts are with everyone impacted and the state has mobilized to support the community," the governor's office wrote on Twitter.

The Pajaro Valley is a coastal agricultural area known for growing strawberries, apples, cauliflower, broccoli and artichokes. National brands like Driscoll's Strawberries and Martinelli's are headquartered in the region.

In 1995, the Pajaro River's levees broke, submerging 2,500 acres (1,011 hectares) of farmland and the community of Pajaro. Two peopled died and the flooding caused nearly US$100 million in damage. A state law, passed last year, advanced state funds for a levee project. It was scheduled to start construction in 2024.

State Sen. John Laird, who spearheaded the law and represents the area, said the project is fully funded now but it just came down to bad timing with this year's rains.

"It's tragic, we were so close to getting this done before any storms," he said.

This week's storm marked the state's 10th atmospheric river of the winter, storms that have brought enormous amounts of rain and snow to the state and helped lessen the drought conditions that had dragged on for three years. State reservoirs that had dipped to strikingly low levels are now well above the average for this time of year, prompting state officials to release water from dams to assist with flood control and make room for even more rain.

Across the state on Saturday, Californians contended with drenching rains and rising water levels in the atmospheric river's aftermath. In Tulare County, the sheriff ordered residents who live near the Tule River to evacuate, while people near the Poso Creek in Kern County were under an evacuation warning. The National Weather Service's meteorologists issued flood warnings and advisories, begging motorists to stay off deluged roadways.

In San Francisco, an 85-foot (25.91 meter) eucalyptus tree fell onto the Trocadero Clubhouse early Saturday morning. The 1892 clubhouse, a San Francisco historical landmark, was left severely damaged, with part of the roof crushed and the inside flooded.

Funnel clouds were spotted in the Jamestown area -- the heart of California's Gold Rush -- on Saturday afternoon and the weather service issued a tornado warning for the Sierra Nevada foothills as thunderstorms and hail blanketed the region. Another set of tornado warnings were issued in Fresno Count y, nearly 100 miles (160.93 kilometers) south of Gold Country.

There were no immediate reports of injuries or damage.

Newsom has declared emergencies in 34 counties in recent weeks, and the Biden administration approved a presidential disaster declaration for some on Friday morning, a move that will bring more federal assistance. President Biden spoke with Newsom on Saturday to pledge the federal government's support in California's response to the emergency, the White House said.

The atmospheric river, known as a "Pineapple Express" because it brought warm subtropical moisture across the Pacific from near Hawaii, was melting lower parts of the huge snowpack built in California's mountains.

Yet another atmospheric river is already in the forecast for early next week. State climatologist Michael Anderson said a third appeared to be taking shape over the Pacific and possibly a fourth.

California appeared to be "well on its way to a fourth year of drought" before the early winter series of storms, Anderson said Friday. "We're in a very different condition now," he added.

The National Weather Service on Saturday forecasted an intensified bout of rain and snow Monday through Wednesday, with considerable flooding possible along the state's central coast, San Joaquin and Sacramento valleys and the southern Sierra Nevada foothills into midweek.

Another round of heavy, wet snow is expected to hit the Sierras and areas of high elevation mid-week, the weather service said. Officials reported about 32 inches (81 centimeters) of snow had fallen by Saturday morning at the Mount Rose ski resort on the edge of Reno, Nevada.

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Dazio reported from Los Angeles.