The National Weather Service issued a dense fog advisory at 12:09 a.m. on Sunday in effect until 10 a.m. for Northern Clinton, Northern Centre, Southern Centre, Northern Lycoming, Southern Clinton and Southern Lycoming as well as Warren, McKean, Potter, Elk, Cameron, Clearfield, Tioga, Sullivan, Union, Snyder, Montour, Northumberland and Columbia counties.

The weather service adds, “Visibility one quarter mile or less in dense fog.”

“Low visibility could make driving conditions hazardous,” explains the weather service. “If driving, slow down, use your headlights, and leave plenty of distance ahead of you.”

Guidance from the weather service for navigating foggy conditions

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 you must venture out in foggy conditions, keep these safety tips from the weather service in mind:

Reduce speed:

• Slow down and allocate 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 available, employ your fog lights.

Avoid high-beams:

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

Keep a safe distance:

• Keep a considerable following distance to account for sudden 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.

Zero visibility strategy:

• 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 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 are not illuminated, reducing the risk of other drivers colliding with your stationary vehicle.

By adhering to these weather service recommendations, you can navigate foggy conditions more safely, reducing the risk of accidents and ensuring your well-being.

Advance Local Weather Alerts is a service provided by United Robots, which uses machine learning to compile the latest data from the National Weather Service.