48-hour rainfall totals: One spot in the North Bay recorded 12 inches

A car navigates its way through a flooded area to a freeway onramp along Alemany Boulevard on Wednesday, February 13, 2019 in San Francisco, Calif. A car navigates its way through a flooded area to a freeway onramp along Alemany Boulevard on Wednesday, February 13, 2019 in San Francisco, Calif. Photo: Lea Suzuki, The Chronicle Buy photo Photo: Lea Suzuki, The Chronicle Image 1 of / 72 Caption Close 48-hour rainfall totals: One spot in the North Bay recorded 12 inches 1 / 72 Back to Gallery

A wet winter storm pulling moisture from the South Pacific soaked the Bay Area and delivered impressive rainfall totals from Tuesday night through Thursday morning. The so-called atmospheric river triggered mudslides and flooding throughout the region.

Venado, an unincorporated town under a lush canopy of redwoods in the mountains of Sonoma County, holds the record for the storm, measuring 12.44 inches in 48 hours. Venado, 10 miles west of Healdsburg, often records the highest rainfall in storms.

"It's up in the hills, so it benefits a lot from that upslope rain," Anna Schneider, a meteorologist with the Bay Area National Weather Service, told SFGATE in January when the location recorded 10 inches in four days. "You get the lifting on the mountains and that squeezes rains from the clouds and produces more rain."

In general, mountain areas saw the heaviest soakings. South Bay peak Mount Umunhum recorded 6.65 inches, Cazadero on the Russian River 6.28, Ben Lomond in the Santa Cruz Mountains 5.92, The Peaks in Big Sur 5.63 and Mount Tamalpais in Marin County 5.19.

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Sonoma and Napa counties saw the most rain with the deluge focused to the north, and most locations at lower elevations on the coast and in valleys in the central Bay Area saw about one inch to two inches. San Francisco was an exception, recording 3.13 inches.

Here are more 48-hour rainfall totals, from 6 a.m. Tuesday to 6 a.m. Thursday

Santa Rosa: 4.77 inches

Sant Helena: 4.44 inches

Novato: 4.13 inches

Mount Diablo: 3.49 inches

Los Gatos: 3.37 inches

San Francisco: 3.13 inches

Petaluma: 2.30 inches

Oakland Hills: 2.21 inches

Downtown Oakland: 1.90

Livermore: 1.72 inches

San Jose: .97

Half Moon Bay: .83

SFO: 2.03 inches

Rain remains in the forecast Thursday morning as the wet and warm storm moves out of the area. A much colder system is expected to arrive Thursday night delivering a lighter dose of showers through Saturday. This storm could also bring some hail and lower elevation snow.