Dense Fog Advisory

A dense fog advisory is issued by your local national weather service office when widespread dense fog develops. What is a dense fog advisory? A dense fog advisory is issued by weather authorities when widespread fog is expected to reduce visibility to a quarter-mile or less over a significant area.

Sep 10, 2025low-visibility events such as dense fog can reduce sightlines to near zero and have been linked to multi-vehicle crashes. The nws publishes dense fog advisories to warn of significantly. Dense fog advisory means dense fog is expected!

Areas of dense fog will reduce visibility and pose a threat to motorists. Stay informed about fog safety – explore the comprehensive resources below. Dense fog advisory - issued when widespread dense fog develops.

1 day agothe dense fog advisory also impacts san joaquin valley communities including merced, los banos, hanford, selma, tulare, visalia, delano, bakersfield and taft. Latest global fog forecast and detection system. Updates every 5 minutes showing where and when fog is expected.

This product is issued when fog reduces visibility to 1/4 mile or less over a widespread area. An advisory for widespread or localized fog reducing visibilities to regionally or locally.