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Dense fog advisory in place for 5 Freeway through Grapevine until Thursday midday – limited visibility

January 29, 2026

5 Freeway through Grapevine is the focus of a dense fog advisory released at 5:46 p.m. on Wednesday by the National Weather Service. The advisory is valid from 11 p.m. until Thursday Jan. 29, at noon.

The NWS Hanford CA adds to anticipate, “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 headlights, and leave plenty of distance ahead of you.”

The full list of affected locations includes:

5 Freeway through Grapevine
Los Banos – Dos Palos
Merced – Madera – Mendota
Planada – Le Grand – Snelling
West Side of Fresno/Kings Counties
Caruthers – San Joaquin – Selma
Fresno-Clovis
Buttonwillow – Lost Hills – I5
Delano-Wasco-Shafter
Hanford – Corcoran – Lemoore
Visalia – Porterville – Reedley
Bakersfield
Southeast San Joaquin Valley
South End San Joaquin Valley
Tehachapi
Buena Vista County

Fog safety: Tips from the NWS for safe travels

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 driving through fog becomes inevitable, remember these safety guidelines:

Moderate your speed:

Slow down and allow extra travel time to reach your destination safely.

Visibility priority:

Ensure your vehicle is visible to others by using low-beam headlights, which automatically activate your taillights. Utilize fog lights if your vehicle is equipped with them.

Avoid high-beams:

Refrain from using high-beam headlights, as they create glare that impairs your visibility on the road.

Maintain safe gaps:

Maintain a significant following distance to account for abrupt stops or shifts in traffic patterns.

Stay in your lane:

To ensure you are staying in the correct lane, use the road’s lane markings as a guide.

Visibility near zero:

In extremely dense fog where visibility is near zero, the best course of action is to first turn on your hazard lights, then simply pull into a safe location such as a parking lot of a local business, and stop.

No parking options:

If no parking area is available, pull your vehicle as far to the roadside as possible. Once stationary, turn off all lights except the hazard flashers, engage the emergency brake, and release the brake pedal to ensure your tail lights are not illuminated, reducing the risk of other drivers colliding with your stationary vehicle.

By adhering to these precautions from the NWS, you can navigate foggy conditions more safely, reducing the likelihood of accidents and ensuring your personal safety.

For more local weather alerts, visit our Weather Advisory page

Dense fog advisory in place for 5 Freeway through Grapevine until Thursday midday – limited visibility Orange County Register

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Dense fog advisory in place for 5 Freeway through Grapevine until Thursday midday – limited visibility

Fog safety: Tips from the NWS for safe travels

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