#fog

#fog

LIVERMORE, Calif. (KGO) -- A fire captain was among those injured in a series of accidents along Vasco Road in Livermore on Friday. The high-traffic roadway has been fogged in all afternoon and all lanes in both directions were closed. As of 4 p.m., all lanes are back open. The Contra Costa County firefighter was hit by a car as he responded to traffic accidents. He is expected to recover.

Fog is a quintessential part of the Bay Area, a seemingly simple suspension of water in air that has shaped our culture and ecology since time immemorial. For us, it is the ghostly embodiment of cold weather and maybe our only chance at a white Christmas. At its core, it only needs two ingredients cool temperatures and humid air and it forms when moisture condenses to form a cloud close to the surface of the Earth.

Fog in the region will be locally dense this morning with the fog reducing visibility to a quarter mile or less in spots.