Delta Fog Advisory: Visibility Reduced to ¼ Mile Sunday | The Mercury News

by Ahmed Ibrahim World Editor

Dense Fog Advisory Issued for Northern California, Hazardous Driving Conditions Expected

A dense fog advisory has been issued by the National Weather Service for the Carquinez Strait and Delta, the Southern Sacramento Valley, and the Northern San Joaquin Valley, effective from 3 a.m. to 11 a.m. on Sunday, November 23. The advisory, released Saturday at 10:14 p.m., warns of significantly reduced visibility and potentially dangerous driving conditions.

Visibility Reduced to a Quarter Mile or Less

The National Weather Service (NWS) Sacramento office anticipates visibility of one quarter mile or less in areas affected by the dense fog. This drastic reduction in visibility poses a serious risk to motorists, prompting officials to urge caution.

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

Navigating Foggy Conditions: Safety Guidelines from the NWS

A dense fog advisory signifies that widespread fog has developed, creating challenging conditions for drivers. Experts recommend considering delaying travel if possible. However, if driving is unavoidable, adherence to specific safety guidelines is crucial.

Here’s a breakdown of recommended precautions:

  • Moderate Your Speed: Reduce speed significantly and allow ample time to reach your destination safely.
  • Maximize Visibility: Utilize low-beam headlights, which automatically activate taillights, ensuring your vehicle is visible to others. If equipped, employ fog lights for enhanced visibility.
  • Avoid High-Beams: Refrain from using high-beam headlights, as they can create glare and worsen visibility.
  • Maintain Safe Following Distances: Increase the distance between your vehicle and the one ahead to allow for abrupt stops or changes in traffic flow.
  • Stay Within Your Lane: Utilize lane markings as a guide to maintain your position on the road.

What to Do in Near-Zero Visibility

In situations where visibility drops to near zero, a specific strategy is recommended. First, activate your hazard lights. Then, pull over to a safe location, such as a parking lot, and come to a complete stop.

If a suitable parking area is unavailable, pull off the road as far as possible. Once stopped, turn off all lights except your hazard flashing lights, engage the emergency brake, and remove your foot from the brake pedal to prevent illuminating the taillights, which could mislead other drivers.

By following these precautions from the NWS, drivers can significantly reduce the risk of accidents and ensure their safety while navigating foggy conditions. For additional weather alerts specific to the Bay Area, visit Weather Advisories.

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