Marin fire burns 58 acres as blazes contained in Santa Rosa and Richmond, officials say

More fires ignited on Thursday in the San Francisco Bay Area, according to Northern California authorities, as firefighters battled the larger Kincade Fire in Sonoma County.

The Muir Fire blackened 58 acres of hillside along Highway 1 near Slide Ranch between Stinson Beach and Muir Beach on the Pacific Ocean coast, the Marin County Fire Department said in a news release Thursday night, but “no one was injured and no structures burned. The cause of the fire is unknown.”

The blaze, which was first reported at 10:45 a.m., shut down Highway 1 in the area and the road remained closed Thursday night, fire officials said.

“Attacks from the air, both with water and retardant, were crucial to preventing the wildfire’s spread,” fire officials said. “Fire personnel will remain at scene overnight and through Friday to ensure fire does not spread.”

In the East Bay, Alameda County authorities said the Richmond Fire Department was fighting a fire in the Point Isabel area.

Richmond fire officials said on Twitter Thursday afternoon that the fire was contained.

KRON reported that the fire had been “burning along the Bay Trail near Interstate 580.”

Meanwhile, firefighters worked Thursday morning to stop another fire that sparked in Santa Rosa near Annadel State Park, SFGate reported. The Santa Rosa Fire Department said Thursday afternoon that the fire had been fully contained.

“Spring Lake Park will remain closed for the rest of the day to allow firefighters easy access in and out of the area to monitor for hot spots,” firefighters said in a news release.

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KPIX shared video on Twitter showing the smoke from the Marin County fire blowing off the land and into the ocean.

Fire officials said those winds made battling the flames easier, “pushing flames toward the ocean instead of up the slopes of Mount Tamalpais to the east.”

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Jared Gilmour is a McClatchy national reporter based in San Francisco. He covers everything from health and science to politics and crime. He studied journalism at Northwestern University and grew up in North Dakota.