Update: Dense fog advisory affecting Denver and the Eastern Plains Sunday – roads could be hazardous

Published May 25, 2025

The National Weather Service released an updated dense fog advisory at 9:24 p.m. on Saturday valid for Sunday between 2 a.m. and noon for North Douglas County below 6,000 feet/Denver/West Adams and Arapahoe counties/East Broomfield County, Elbert/central and east Douglas counties above 6,000 feet, Central and South Weld County and Central and East Adams and Arapahoe counties as well as Morgan County.

The NWS says to prepare for, “Visibility less than one mile in dense fog.”

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

Guidance from the NWS for navigating foggy conditions

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 you must drive in foggy conditions, keep the following safety tips in mind:

Reduce speed:

Slow down and allocate extra time for your trip 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 lights, as they create glare, making it more difficult for you to see what’s ahead of you on the road.

Keep your distance:

Maintain a generous following distance to account for abrupt stops or shifting traffic patterns.

Stay in your lane:

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

Zero visibility protocol:

In situations of near-zero visibility due to dense fog, activate your hazard lights and seek a secure location, such as a nearby business’s parking lot, to pull over and come to a stop.

Limited 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 recommendations from the NWS, you can navigate foggy conditions with greater safety, mitigating the risk of accidents and prioritizing your well-being.

Source: The National Weather Service