LOS ANGELES (CBSLA.com) — Dense fog blanketed the Southland during the morning commute on Tuesday.

According to the National Weather Service, a dense fog advisory will be in effect until 9 a.m. for Santa Catalina Island and along the Los Angeles County coast, including beach cities, metropolitan Los Angeles, downtown L.A. and the Hollywood Hills.

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An advisory will also be in force in coastal and inland Orange County.

Visibility was down to a quarter-mile or less, forecasters said.

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Road travel could be hazardous on Pacific Coast Highway and Interstates 10, 105, 110, 405 and 710 in Los Angeles County and Interstates 5 and 405 in Orange County.

Motorists have been urged to drive slower than usual, avoid tailgating, use low beam headlights and allow extra time to get to destinations.

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