Dense Fog Expected to Blanket Long Island

Low visibility could make driving conditions hazardous, the National Weather Service warns.

Published on Feb. 19, 2026

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The National Weather Service has issued a dense fog advisory for Long Island, with visibility expected to be one quarter mile or less due to the dense fog. The advisory is in effect from 10 p.m. Monday evening until 10 a.m. Wednesday morning, and the low visibility could make driving conditions hazardous.

Why it matters

Dense fog can significantly reduce visibility and make driving extremely dangerous, increasing the risk of accidents and delays. This advisory is important for Long Island residents to be aware of in order to take proper precautions when traveling during this time period.

The details

According to the National Weather Service, the dense fog is expected to blanket Long Island, reducing visibility to one quarter mile or less. Drivers are advised to slow down, use their headlights, and leave plenty of distance ahead when traveling during this time.

  • The dense fog advisory is in effect from 10 p.m. Monday evening until 10 a.m. Wednesday morning.

The players

National Weather Service

The National Weather Service is the primary source of weather data, forecasts, and warnings for the United States.

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The takeaway

Residents of Long Island should be aware of the dense fog advisory and take necessary precautions when driving during the affected time period to ensure their safety and the safety of others on the road.