Storms expected to douse Bay Area, I-80 reopened after heavy snowfall

Scattered showers Monday will pepper the Bay Area just a day before a larger storm sweeps through and pummels the region with another round of heavy rain, according to the National Weather Service.

Cloudy weather expected throughout Monday should provide a break from the weekend rainfall, which brought gusty winds and major delays to the area’s airports.

Sunday’s storm dropped 1.28 inches of rain on San Francisco, 1.24 inches on Oakland, 2.58 inches on Santa Rosa and 0.78 inches on San Jose over a 24-hour period, according to the National Weather Service.

Tuesday’s cold front is expected to bring another round of rainfall and some breezy winds, said Roger Gass, a meteorologist with the National Weather Service.

The wet weather will subside briefly Wednesday night and Thursday morning before another storm brings more winds and precipitation into the Bay Area, he said.

“We’ll keep this pattern up where system after system sweeps through,” Gass said.

Repeated rainstorms have boosted water totals throughout the area with San Francisco now at 7.36 inches of rainfall, or 76 percent of average rain totals, since the water year began Oct. 1. Concord Airport has measured 6.33 inches of rain and stands at 100 percent of the average as of early Monday morning, Gass said.

Multiple rainstorms over the past week have saturated the region, prompting weather officials to closely monitor potential flooding and minor ponding.

Minor floods this past weekend shut down swaths of the Embarcadero and Great Highway in San Francisco and Highway 85 in San Jose for brief periods.

However, expected rainfall rates are not yet high enough to trigger mudslides, officials said.

“Most of these storm systems are pretty beneficial and not so much heavy, heavy rain, causing flooding concerns at this moment,” Gass said. “We’ll take all the rain we can get.”

As of Monday morning, southbound Great Highway was still closed due to water buildup and there was no estimated time to reopen the lanes, said Department of Public Works spokeswoman Rachel Gordon. Morning commuters were being advised to take Sunset Boulevard and stay off residential streets.

In the Sierra, ski resorts received up to four feet of snow over the weekend, trapping drivers on Interstate 80 as they traveled to and from the Tahoe region.

A hard closure on I-80 was lifted Monday morning as snow showers lightened up, allowing drivers through the mountain pass between Colfax (Placer County) and the Nevada state line, according to Caltrans.

Gwendolyn Wu is a San Francisco Chronicle staff writer. Email: Twitter: @gwendolynawu

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