On Sunday at 4:07 a.m. the National Weather Service released a dense fog advisory in effect until 10 a.m. for San Gabriel Valley.

The NWS Los Angeles/Oxnard CA adds to be ready for, “Visibility one quarter mile or less in dense fog.”

“Low visibility could make driving conditions hazardous,” according to the NWS. “If driving, slow down, use your low beam headlights, and leave plenty of distance ahead of you.”

Guidance from the NWS for navigating foggy conditions

When a dense fog advisory is issued for your area, it means that widespread dense fog has developed and visibility can plummet to a quarter-mile or less. These conditions pose challenges for travel, so exercise extra caution on the road or consider postponing your trip if possible.

If you must drive in foggy conditions, keep

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