Dense Fog Advisory

A dense fog advisory is issued by your local national weather service office when widespread dense fog develops. Latest global fog forecast and detection system. Updates every 5 minutes showing where and when fog is expected

Dec 29, 2025all of new york city was under a dense fog advisory monday morning, with warmer air in place after freezing rain in the tri-state area overnight. While fog is distinctly different from severe weather events like thunderstorms, its monitoring is vital due to the potential risks it poses. Poor visibility due to fog can lead to hazardous driving and flying.

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 5, 2025the national weather service released a dense fog advisory at 1:03 a.m.

Dense fog advisory means dense fog is expected! Areas of dense fog will reduce visibility and pose a threat to motorists.