A Advice on dense fog operating from the Large Sur coast to the San Francisco Bay shoreline this morning is vastly decreasing visibility and complicating journey alongside a few of California’s most closely used coastal corridors.
The Nationwide Climate Service (NWS) warns that motorists within the Salinas and Carmel Valleys, the Hollister space, Monterey Bay and the San Francisco Bay shoreline ought to count on visibility of “1 / 4 mile or much less in dense fog” till late within the morning.
The advisory, issued by the NWS San Francisco Bay Space workplace, runs till 11 a.m. PST and emphasizes that “Poor visibility could make driving circumstances harmful.”
Native reporting from Central Coast retailers mirrored these considerations, highlighting widespread fog that affected Monday commutes and early vacationer visitors.
The core threat is not only the fog itself, but in addition how rapidly circumstances change. Alongside Freeway 1 and US 101, drivers can go from comparatively clear stretches to nearly white areas in a matter of seconds.
That is particularly harmful on two-lane stretches close to Large Sur, the place sharp turns, cliffs and a scarcity of lighting go away little room for error. National guidance from the NWS on fog security underlines that motorists ought to drive slower, take additional time and make their autos extra seen through the use of low beam as a substitute of excessive beam.

Transportation and security businesses throughout California have repeatedly emphasised an analogous message. Caltrans and the California Freeway Patrol (CHP) are advising motorists to cut back their velocity, use low beam headlights, keep a secure following distance and keep away from sudden lane adjustments when driving in dense fog.
In line with Caltrans-associated security campaigns, dashing stays a number one consider fog-related crashes, which usually have the next fatality price than many different weather-related collisions. ABC30 Fresno+1

Meteorologically, immediately’s occasion is a textbook instance of the Central Coast sample of early winter: cool, secure air held on the floor in a single day after latest moisture, with gentle winds permitting fog to thicken in low-lying basins and alongside the marine layer. The NWS zone forecasts for the northern Salinas, Hollister and Carmel Valleys, in addition to the southern Monterey Bay and Large Sur coast, all embrace the identical advisory language and observe that clouds are anticipated to interrupt later within the day.
For Bay Space commuters, the recommendation goes right down to the wire The shoreline of San Francisco Bay, the Santa Clara Valley, and the North and East Bay valleyswhich implies that the view of a number of bottlenecks on the freeway is obstructed.
Transportation officers are urging drivers to permit additional journey time, particularly when approaching main bridges and interchanges the place sudden braking in fog may cause multi-vehicle collisions.
Vacationers and vacationers face a unique however associated set of challenges. Guests who head to Monterey, Carmel or Large Sur for dawn views usually discover that the shoreline is totally hidden till late morning. Climate warning bulletins for Monterey explicitly instruct drivers: “If you’re driving, decelerate, use your headlights and go away loads of distance in entrance of you.”
This recommendation is particularly essential on scenic exits and slim park approaches, the place pedestrians, cyclists and parked autos might seem abruptly out of the fog.
Key insights for immediately’s vacationers embrace:
- To count on very restricted visibility alongside Freeway 1, US 101, and valley connecting roads through the morning hours.
- Delay non-essential journey the place attainable till late within the morning; NWS forecasts point out a gradual enchancment by the afternoon.
- Whereas driving, keep away from excessive beamswhich may mirror on fog droplets and additional cut back visibility, relying as a substitute on low beams and fog lights.
If December continues, further intervals of dense fog are seemingly alongside the Central Coast and Bay Space, particularly after incoming storm methods later this week.
Now that vacation visitors is growing, security authorities are emphasizing this warning, slower speeds, and good lighting are the best defenses in opposition to fog-related crash dangers in California.
