A roar jolted Kevin Austin awake in the middle of the night, like a train passing his bedroom. But there weren’t any tracks near his Sausalito home.

A massive mudslide had just given way in the 33-year-old’s neighborhood, as the loose soil under his next-door neighbor’s home sent it rushing toward another house. The predawn landslide Thursday occurred in the midst of a torrential storm — the largest to hit the Bay Area this year.

“I just thought to get out,” Austin said, as he and a few others took shelter Thursday at an evacuation center at Sausalito City Hall. “It kept getting louder.”

A woman was trapped inside the home as it slid into a neighboring house. It didn’t take long for crews to rescue her. Luckily, she and everyone else impacted by the landslide made it out alive, and no major injuries were reported.

The storm caused power outages, school closures, and widespread flooding that prompted evacuations and road closures as rivers and streams overflowed.

Here are some of the biggest impacts from the storm:

Flooding

In the 24 hours ending at 7 p.m. Thursday, San Francisco and Oakland each received 1 inch of rain, St. Helena and Kentfield got over 2 inches, and Richmond and Orinda got almost 2 inches, according to the National Weather Service.

More than 4 inches of rain was reported in Venado, west of Healdsburg in Sonoma County — the most precipitation of any place in the Bay Area, which is typical for the small unincorporated town.

The impacts of the storm — classified as an atmospheric river — have been vast.

“This is the strongest one we’ve had this season,” said Carolina Walbrun, a National Weather Service meteorologist.

In San Jose, 800 people were evacuated for nearly an hour before dawn just north of Almaden Expressway as the city’s major waterway, the Guadalupe River, was expected to exceed the flood stage of 8.5 feet.

Novato had a shelter-in-place advisory because of severe flooding on Papermill Creek Court.

Just south of Novato, a levee breached at about 10:30 a.m. near Highway 37 and Novato Creek. Officials initially warned residents of Bel Marin Keys to be prepared for potential evacuation orders. But by early afternoon, said Noemi Camargo, the community’s manager, the tide was going out and no homes were in danger.

Elsewhere in the North Bay, the Russian River at Guerneville reached flood level at 32 feet and overflowed, said Scott Rowe, a meteorologist with the National Weather Service.

Scattered showers are expected to continue for the remainder of the week and throughout the weekend, officials said, but the impact will be far less to the region, and no flooding is expected over the next few days.

“We are not going to be seeing the rain rates that we were seeing with this past system,” Walbrun said.

UPDATE 7:07 am- The National Weather Service's forecast expects lighter rain through the day which is not predicted to create flooding conditions. Residents in flood watch areas are safe to return home! Stay alert and we'll continue to inform you here. — City of San José (@CityofSanJose) February 14, 2019

Snow

As rain tapers off throughout the Bay Area, the Sierra is preparing for several feet of snow to bombard the region.

The heaviest snowfall began at 10 a.m. in the Tahoe area, and flurries were expected to last through 10 a.m. Saturday, according to the National Weather Service.

“It will be the third weekend in a row that we’ve seen multiple feet of snow in the Sierra,” said Emily Heller, a meteorologist with the National Weather Service.

Ski resorts are anticipating waves of snow through the rest of the weekend, which could add several feet to the current season total of 408 inches. The average snowfall is 450 inches.

About 2 feet of snow is expected at Donner Pass in Nevada County near Lake Tahoe, and nearly 3 feet of snow is anticipated at Tioga Pass in Yosemite. Ebbetts Pass in Alpine County, south of Lake Tahoe, could receive up to 4 feet.

Power outages

Across the Bay Area, at least 41,000 Pacific Gas & Electric customers started the day without power. By noon, weather conditions improved, and 20,000 of those homes and businesses saw their power restored.

The largest number of outages Thursday afternoon was in the North Bay, with 5,594 customers in the dark, said Karly Hernandez, a spokeswoman for the utility. In San Francisco, 2,960 customers were without electricity.

A total of 548 customers lost electricity in the East Bay, while the South Bay had 3,418 reported power outages, including 2,663 near San Jose.

San Jose City College shut down due to a campus-wide power outage.

The Peninsula had 5,212 customers report power outages.

Transportation

No airport in the Bay Area had more issues Thursday due to driving rain and wind gusts than San Francisco International Airport, which had 285 flight delays — averaging around 70 minutes — and 111 cancellations.

Throughout the day, major roadways were shut down due to flooding and downed trees resulting in severe traffic alerts around the region.

Flooding shut down lanes on Highway 121 in Sonoma and Highway 1 in Valley Ford, while downed trees closed lanes on Highway 9 in Santa Clara County, Highway 84 at Fox Hill Road in Woodside and Highway 116 in Sonoma County.

The atmospheric river continued to push south Thursday and was expected to make its way toward Los Angeles and San Diego, officials said.

Sarah Ravani, Ashley McBride and Gwendolyn Wu are San Francisco Chronicle staff writers. Email: sravani@sfchronicle.com, ashley.mcbride@sfchronicle.com, gwendolyn.wu@sfchronicle.com Twitter: @SarRavani, @ashleynmcb, @gwendolynawu