SAN FRANCISCO (BCN) — The National Weather Service is warning motorists to be careful driving on Bay Area roads Sunday morning due to dense fog in some areas.

The weather service issued an advisory for dense fog through 10 a.m. There were reports of visibility ranging from 1/2-mile down to 1/8-mile in some locations.

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Coastal areas are affected, along the North Bay, San Francisco peninsula and Monterey Bay, with the possibility of small patches of dense fog near the San Francisco Bay shoreline and the Napa Airport.

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Motorists should drive cautiously and use low beams while driving in fog, the weather service said.

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