Dense Fog Advisory 03/04/2026 19:59 Maryland

Headline: 
Dense Fog Advisory issued March 4 at 10:59PM EST until March 5 at 10:00AM EST by NWS Baltimore MD/Washington DC
Event: 
Dense Fog Advisory
Urgency: 
Expected
Effective: 
March 4, 2026 - 7:59pm
Expires: 
March 5, 2026 - 4:00am
Description: 
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Carroll, Frederick MD, Northern Baltimore, and Northwest Harford Counties. * 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 Harford
Forcast Office: 
NWS Baltimore MD/Washington DC
Sender: 
w-nws.webmaster@noaa.gov