Fountain Valley: Dense Fog Blankets OC As Weather Warms

FOUNTAIN VALLEY, CA — Dense fog shrouded much of Orange County Thursday morning and more was anticipated Thursday evening and Friday morning, the National Weather Service said.

A dense fog advisory issued by the National Weather Service was in force until 9 a.m. Thursday morning in Orange County and San Diego County, inland and coastal areas.

Dense fog is anticipated along the coast and up to 12-miles inland, with visibility of one-quarter mile or less, sharply reducing visibility and possible airport delays, the NWS said.

The weather service attributed the fog to a mass of moist air trapped beneath a ridge of high pressure.

The NWS said the fog is reducing visibility to a quarter-mile or less, creating dangerous driving conditions.

Motorists driving in the fog should reduce speeds, leave extra space between themselves and vehicles in front of them, use only low beams and give themselves extra time to reach their destinations, the NWS urged.

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