Note: The Dense Fog Advisory has expired for the DC region. The most recent advisory issuances before the expiration are below.
A Dense Fog Advisory is in effect to 8 am Thursday, September 18, 2025 including the following jurisdictions.
MARYLAND: Washington, central/eastern Allegany.
WEST VIRGINIA: Hampshire, Morgan, Berkeley, eastern Mineral.
Excerpted from the National Weather Service:
…DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING…
WHAT…Visibility one quarter of a mile or less in dense fog.
WHERE…In Maryland, Washington and Central and Eastern Allegany Counties. In West Virginia, Eastern Mineral, Hampshire, Berkeley, and Morgan Counties.
WHEN…Until 8 AM EDT this morning.
IMPACTS…Low visibility could make driving conditions hazardous.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
A Dense Fog Advisory remains in effect to 8 am Thursday, September 18, 2025 including the following jurisdictions.
VIRGINIA: Rockingham, Shenandoah.
Excerpted from the National Weather Service:
…DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING…
WHAT…Visibility one quarter of a mile or less in dense fog.
WHERE…Shenandoah and Rockingham Counties.
WHEN…Until 8 AM EDT this morning.
IMPACTS…Low visibility could make driving conditions hazardous.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.