FARFIELD (KRON) — A dense fog advisory is in effect in Farfield until 10:00 a.m. Saturday morning, according to the National Weather Service in Sacramento.

The affected areas are northern San Joaquin Valley and Southern Sacramento Valley, the National Weather Service said.

A dense fog advisory means that visibility is reduced to less than a quarter mile.

The National Weather Service is advising drivers in these areas to take it slow, use your headlights, and leave extra room in front of you.

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