TIMELINE: Red Flag Warning expires in Bay Area but caution still advised

SAN FRANCISCO (KGO) -- A Red Flag Warning was allowed to expire for the Bay Area and Central Coast after gusty offshore winds eased, the National Weather Service said Saturday afternoon.

While wind speeds subsided, "nearly critically dry conditions persist through early next week," the weather forecast office for the San Francisco Bay Area said on social media.

Wind gusts in the North Bay mountains and East Bay mountains that were as high as 50 mph to 60 mph overnight had fallen to 20 mph to 25 mph by late afternoon, meteorologist Dylan Flynn said.

Red Flag danger is determined by a combination of wind speed and humidity, he said.

"We lost one of them -- we lost wind speed, that's good," Flynn said. "We're no longer hitting Red Flag criteria, but we're still flirting with Red Flag criteria."

As of 6 p.m., humidity was 28% at San Francisco's official climate station, at the San Francisco Mint, 11% in south Santa Clara County at San Martin Airport, and 22% at Napa County Airport, the weather service said.

Strong winds and low humidity continue to create dangerous fire conditions.

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North winds are 10-20 mph with gusts up to 40 mph. Relative humidity could be as low as 8%.

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A Wind Advisory lasted through 8 a.m. Saturday in the North Bay Mountains with gusts up to 50 mph.

Winds relaxed Saturday afternoon.

Bay City News contributed to this report.

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