Dense Fog Advisory 03/04/2026 20:01 Maryland, Virginia

Headline: 
Dense Fog Advisory issued March 4 at 11:01PM EST until March 5 at 10:00AM EST by NWS Baltimore MD/Washington DC
Event: 
Dense Fog Advisory
Urgency: 
Expected
Effective: 
March 4, 2026 - 8:01pm
Expires: 
March 5, 2026 - 4:15am
Description: 
* 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.
Instruction: 
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Area Description: 
Frederick; Carroll; Northern Baltimore; Northwest Montgomery; Central and Southeast Montgomery; Northwest Howard; Central and Southeast Howard; Northwest Harford; Rockingham; Shenandoah; Page; Madison; Rappahannock; Culpeper; Fairfax; Northern Fauquier; Southern Fauquier; Western Loudoun; Eastern Loudoun; Northwest Prince William; Central and Southeast Prince William/Manassas/Manassas Park
Forcast Office: 
NWS Baltimore MD/Washington DC
Sender: 
w-nws.webmaster@noaa.gov