The National Weather Service (NWS) released a dense fog advisory on Saturday at 6:14 a.m. affecting the North Bay Interior Valleys, Southern Monterey Bay, and Big Sur Coast. This advisory is in effect until 10 a.m.
The NWS San Francisco CA warns of significantly reduced visibility, stating:
“Visibility one half mile or less in dense fog.” “Low visibility could make driving conditions hazardous.”
Dense fog may cause visibility to drop below one-quarter of a mile, creating dangerous travel conditions.
“Use your low beam headlights, slow down, and be prepared for periods of hazardous driving conditions due to poor visibility. If possible, consider avoiding travel across the region. If you must travel, allow extra drive time to reach your destination safely.”
This advisory means widespread dense fog has formed, reducing visibility to a quarter-mile or less. Such conditions demand increased caution or postponing trips when feasible. If driving cannot be avoided, these safety tips are crucial to prevent accidents.
Summary: Dense fog in affected California regions creates hazardous driving conditions, requiring drivers to slow down, use low beam headlights, and plan extra travel time for safety.