Dense Fog Advisory

Locations Affected

Frederick, MD ∙ Rockville, MD ∙ Gaithersburg, MD ∙ Harrisonburg, VA ∙ Chevy Chase Village, MD ∙ Adamstown, MD ∙ Derwood, MD ∙ Quicksburg, VA ∙ Savage, MD ∙ Nokesville, VA

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1101 PM EST Wed Mar 4 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST THURSDAY... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of central, north central, and northern Maryland and northern, northwest, and western Virginia. * WHEN...Until 10 AM EST Thursday. * 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.

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