A dense fog advisory was issued by the National Weather Service on Sunday at 6:33 a.m. in effect until 11 a.m. for 5 Freeway through Grapevine.
The NWS Hanford CA says to be ready for, “Visibility down to quarter mile or less in dense fog.”
“Low visibility could make driving conditions hazardous,” the NWS said. “If driving, slow down, use your headlights, and leave plenty of distance ahead of you.”

Navigating fog: Safety tips by the NWS
If a dense fog advisory is issued for your area, it means that widespread dense fog has developed and visibility often drops to just a quarter-mile or less. These conditions can make driving challenging, so exercise extreme caution on the road, and if possible, consider delaying your trip.
If driving in fog becomes unavoidable, remember these safety tips:
Reduce 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 also activate your taillights. If you have fog lights, use them.
Avoid high-beams:
Refrain from using high-beam headlights, as they create glare that impairs your visibility on the road.
Keep a safe distance:
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.
Limited parking options:
If there is no parking lot or driveway to pull into, pull your vehicle off to the side of the road as far as possible. Once you come to a stop, turn off all lights except your hazard flashing lights, set the emergency brake, and take your foot off of the brake pedal to be sure the tail lights are not illuminated so that other drivers don’t mistakenly run into you.
By adhering to these recommendations from the NWS, you can navigate foggy conditions more safely, reducing the risk of accidents and ensuring your well-being.
For more local weather alerts, visit our Weather Advisory page