Update: Dense fog advisory active for Grand Valley until Saturday midday – quarter mile visibility

Published Jan 3, 2026

At 9:52 a.m. on Saturday, the National Weather Service released an updated dense fog advisory in effect until noon for Grand Valley.

The NWS says to anticipate, “Visibility less than a quarter of a mile in dense fog.”

“Low visibility could make driving conditions hazardous,” says the NWS. “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 through fog becomes inevitable, remember these safety guidelines:

Moderate your speed:

Slow down and allocate extra time for your trip to reach your destination safely.

Visibility matters:

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:

Leave a safe distance between you and the vehicle in front of you to account for sudden stops or changes in the traffic pattern.

Stay in your lane:

Use the road’s lane markings as a guide to staying in the correct lane.

Zero visibility strategy:

In cases of near-zero visibility due to dense fog, activate your hazard lights and seek a safe spot, like a nearby business parking lot, to pull over and stop.

Limited parking options:

If no designated parking area is available, pull your vehicle as far off the road as possible. Once stationary, deactivate all lights except the hazard flashers, engage the emergency brake, and release the brake pedal to ensure your tail lights remain unlit, minimizing the chance of other drivers colliding with your stationary vehicle.

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.

Source: The National Weather Service