A high surf warning is in effect for the Sonoma and Marin coasts through 10 p.m. Monday, Nov. 9, with breaking waves of 12 to 16 feet, and a coastal flood advisory for extra-high tides now runs through Friday, Nov. 13.

The National Weather Service warned the big surf could bring sudden sneaker waves and dangerous rip currents, KSRO reported. Low-lying shoreline and tidal areas could see up to 1.6 feet of water, with the worst flooding risk around high tide.

Flood advisory extended

The weather service extended the coastal flood advisory Saturday after forecasts showed high tides reaching 1.2 to 1.6 feet above normal every day through Friday, NBC Bay Area reported, citing Bay City News. Localized flooding is possible in low-lying coastal and bayshore areas from Sonoma County to Monterey County, and road closures are expected.

Safety tips

Stay off jetties and exposed rocks, keep pets leashed, never turn your back on the ocean, and stay well back from the water. Tides can arrive up to 90 minutes earlier or later than forecast. Allow extra travel time and don't drive around flood barriers. Related: Embarcadero flood risk rises.