(CNN) Californians battered by dangerous storm onslaught will be flooded again in another storm atmospheric river More deadly flooding threatens.

More than 30 million people were under flood watch in California on Monday, covering much of the state, including Los Angeles, San Francisco, Fresno and Sacramento.

Those expected to bear the brunt of the storms are expected to hit Northern and Central California starting late Monday and Southern California starting Tuesday.

already, Monterey County Levee Breach A devastating weekend of flooding has been blamed and an evacuation alert has been issued for thousands. Residents of Monterey Bay will soon find themselves on a virtual island. blocked by more floods.

Nearly 20 whitewater rescue teams in over 10 counties Dozens of water rescues have taken place in recent days, the California governor’s agency for emergency services said on Monday.

A new wave of this threatening weather is coming By the deadly atmospheric river — A long narrow band of moisture that can carry saturated air Thousands of miles like a fire hoseIt will be from the 11th hit the west this winter season.

From severe flooding to prolonged drought, rising global temperatures have increased the severity of water-related disasters around the world over the past two decades. climbed to record levelsa new research show.

New storms in California could exacerbate flooding and damage in some places. Already residents of central and northern California have been evacuated amid landslides, rushing rivers, collapsed bridges and impassable roads. I’m pushing into the place.

Parts of northern and central California can experience heavy rainfall totaling up to 8 inches.

Parts of Monterey County, including Salinas, south of San Francisco, could be blocked by flooding of the Salinas River, officials said. People at riskShelter can and should be soughtWith family and friends or at one of the county shelters, Monterey County officials said.

The storm could also complicate efforts to repair a levee in Monterey County that was breached around midnight Friday by rising waters in the Pajaro River.Evacuation alerts for 5,000 residents could be extended.

Monterey Sheriff Tina Nieto said thousands were forced to evacuate as water rushed through a rift more than 120 feet into nearby Pajaro, and crew rescued nearly 200 people. We fear that this next storm will require even more rescues.

“The situation is dynamic and evolving,” said Jeremy Erlich, flood division manager for the California Department of Water Resources. Construction workers continue to work to stabilize the embankment, and engineers are focusing on short-term and long-term fixes, he said. The Flood Department contacts other levee managers in the area before the storm to ensure safety and stability.

Many of Pajaro’s residents are farm workers, and if continued flooding affects their agriculture, they could not only lose their property, but their ability to earn a living for some time, said the Monterey County superintendent. Commission Chair Luis Alejo said.

“These people are the least able to bear this kind of hardship,” he said.

What to expect as the storm progresses

This new wave of storms is sweeping into areas already buried by the heavy snowfall of the past two weeks. melting snow It is also expected to play a role in prolonging flooding over the next few days, forecasters said.

The National Weather Service’s Storm Prediction Center has issued a Level 4 of 4 risk for excessive rainfall. That’s the center’s highest risk assessment, and flash floods are possible along the coast from parts of central California’s Monterey County as far south as Santa Barbara on Tuesday.

Rain is expected to begin to intensify later Monday, combined with a thaw that will bring more flooding Tuesday through Wednesday. National Weather Service Said.

forecaster warned Through Tuesday, much of central California could experience “significant flooding effects” below 5,000 feet elevation. Streams and streams that have already swelled from previous flooding are at risk of flooding from rain or thaw.

“Although total precipitation during this next storm is far from historic, the impact is likely to be greater than total precipitation suggests.” UCLA climate scientist Danielle Swain Said.

In Southern California, rain can fall as fast as an inch an hour in the mountains and foothills. Los Angeles’ National Weather Service warned residents of fallen trees, downed power lines, flooded roads and landslides.

Thirty-two shelters opened in 13 California counties on Monday, according to the state. emergency services officeMore than 600 people are staying in shelters, mostly in Santa Cruz and Monterey counties, according to the agency.

“We are an island now”

Rescuers pulled dozens of residents from dangerous floods as heavy rains pushed rivers and streams onto their banks last week.

About 200 people were rescued in Monterey County alone, according to Sheriff Tina Nieto.

The county has both a search and rescue team and a rescue dive team operating on 24-hour shifts because of the flooding, Deputy Sheriff Keith Boyd said Monday.

In the county’s hard-hit Pajaro area, authorities have evacuated nearly 2,000 people. Boyd said a school, two mobile homes in his park, and about 800 homes in the area were affected by the floods.

California Highway Patrol Posted dramatic video of helicopter rescue In King City, where the driver was trapped in the Salinas River.

“The swollen river washed away the driver and the car, but the driver was able to escape from the car and reach an island in the middle of the swollen Salinas River.” Post Highway Patrol Sunday.

Evacuation orders remain in parts of Kern County as the swollen Kern River washed away huts, hot tubs and full-sized trees, residents said.

“The river now surrounds several RVs and mobile homes, which is really incredible,” said Danny Hausch, who has worked in Kernville for 17 years, and has seen something like this. I said no.

Up north, about 700 Soquel residents were stranded after heavy rainfall Friday in Santa Cruz County left the pipe, the only road connecting the community to the area, collapsed, said the county’s deputy public works director. Steve Wiesner said.

“We’ve become an island,” resident Molly Watson told CNN.

Another hard-hit area is Tulare County, where video from Springville showed devastating damage after severe flooding on Friday.

Hattie Shepherd told CNN, “It’s heartbreaking. So many hardworking people have lost their homes, their possessions, and been forced from their homes.”

CNN meteorologists Dave Hennen and Haley Brink and CNN’s Rachel Ramirez, Tina Burnside, Mike Valerio and Sharif Paget contributed to this report.