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Much of Bay Area under Red Flag Warning through Tuesday evening

Forecasters issued a red flag warning for Sunday night into Tuesday evening, when gusty north winds and dry conditions are in store for the Bay Area.

High winds could bring power outages, topple trees and break limbs, according to the National Weather Service.

In addition, a gale warning was issued for Bay Area waters and forecasters advise mariners to consider altering plans.

PG&E PG&E is expected to cut power to nearly 10,000 Bay Area customers Monday, Oct. 11, 2021 as a precaution during a high wind event and Red Flag Warning. (Courtesy of PG&E)

The red flag warning upgrades a previous wind advisory and affects the North Bay mountains, East Bay hills and East Bay valleys from 11 p.m. Sunday to 5 p.m. Tuesday, the weather service said.

The warning is also in effect for the Santa Cruz mountains from 2 a.m. Monday to 5 p.m. Tuesday. For the mountains of San Benito and Monterey counties, the warning is in effect from 5 a.m. Monday to 5 p.m. Tuesday.

In the North Bay mountains of coastal Sonoma and Marin ranges, peak winds are expected Sunday night into Monday morning, with winds of 10-20 mph and gusts of 25-35 mph.

The East Bay hills will see peak winds Sunday night through Monday, with gusts of 35-45 mph.

East Bay valleys are forecast for winds of 10-20 mph, with gusts of 25-35 mph. Peak winds are expected Sunday night into Monday afternoon.

NWS Red Flag Warning beginning the night of Sunday, Oct. 10, 2021. (Courtesy of National Weather Service)

The Santa Cruz mountains will see gusts of 35-50 mph, with peak winds early Monday morning into Monday afternoon, forecasters said.

PG&E on Saturday began notifying up to 44,000 customers across 32 counties that their power may be shut down Monday as a precaution during the wind event. As of Sunday morning, the PG&E planned outage map reflects that more than 9,000 North Bay customers and just shy of 780 East Bay customers could be impacted.  

Nik Wojcik of SFBay contributed to this report.

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