(KTXL) — The region will experience the heaviest rain Monday afternoon into Tuesday, according to FOX40’s Weather Team. 

Rain will quickly diminish early Tuesday, but snow will continue. 

The valley could get between 2 to 5 inches of rain through Tuesday, which is a lot of rain to handle over a short time, FOX40 meteorologist Adam Epstein said.

The impacts from the rainfall will likely be a nuisance for residents, who could experience flooding from clogged drains. The rain could also cause small streams to overflow.

Around 6:45 p.m., Caltrans said two lanes on Highway 99 near 47th Avenue were blocked due to flooding. Drivers should expect delays.

Del Paso Road also experienced flooding, with officials closing the road from Northgate to Carey boulevards. Sacramento Fire Department reported one person needed help getting to safety after their car got stuck.

A Flood Advisory was issued Monday evening, which will last until 6:30 a.m. Tuesday. Some locations that will experience flooding include the Greater Sacramento area, Stockton, Modesto, Fairfield, Vacaville, Chico, Tracy, Turlock and Paradise. 

The Sacramento and San Joaquin valleys, as well as the Delta, are also expected to experience sustained 20- to 30-mph winds and 45- to 50-mph gusts.

Due to those winds, the National Weather Service says a wind advisory will be in effect until 10 p.m. Monday. As with the rain, the strongest winds are expected in the afternoon hours. 

The NWS warned people to prepare for power outages and dangerous travel conditions.

By noon Monday, tens of thousands of Sacramento Municipal Utility District customers were without power, with major outages reported in Citrus Heights and Elk Grove.

Karly Hernandez, a spokesperson for Pacific Gas & Electric, said the utility didn’t have any major outages on Sunday. Crews and equipment are staged across the state to respond quickly if the power goes out, Hernandez told the Associated Press.

Sacramento will open a respite center for the unhoused community in the City Hall Lobby on I Street starting at 8 p.m. Monday. Pets can be kept in kennels in a covered, protected space outside.

Sunday night was a busy one for tow truck drivers and the California Highway Patrol.

Video showed the scene of an accident on Butano Drive where a car left the roadway and ended up on a lawn, just missing crashing into a building.

“First rain, it’s the oil on the pavement that causes the tires to slip. And people don’t realize, they still have the confidence thinking that they can drive fast, but that’s when it’s very, very dangerous,” said Rick Chima of Chima’s Towing. “All that oil causes the cars to slip and slide and lose control. Tell them to slow down around the bends. If it says 45, go down to 40.”

A winter storm warning remains in effect Monday morning as snow falls in the Sierra and portions of the foothills. The advisory is expected to remain in effect until 10 p.m. Tuesday.

Chain controls are required along both Highway 50 and Interstate 80.

Another system is expected to bring more rain into the valley Wednesday into Thursday.

That storm system could deliver almost continuous snow, said Edan Weishahn of the Weather Service in Reno, which monitors an area straddling the Nevada state line.

The NWS reported Sunday, Sacramento’s 2022 water year, which runs from Oct. 1 to the end of September 2022, has already beaten the 2021 water year total of 7.87 inches of rain.

“Recall that the last Water Year was dismally dry, so the bar was set low,” the NWS wrote in a tweet.

The weather follows a calm November that was unseasonably warm.

“With this storm coming in, it’s going to be a wake-up call to a lot of folks,” Weishahn said.

The Associated Press contributed to this report.