Dense Fog Advisory Pennsylvania | Effective 03/21/2026 00:30

Headline: 
Dense Fog Advisory issued March 21 at 3:30AM EDT until March 21 at 8:00AM EDT by NWS State College PA
Event: 
Dense Fog Advisory
Urgency: 
Expected
Effective: 
March 21, 2026 - 12:30am
Expires: 
March 21, 2026 - 5:00am
Description: 
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...A portion of central Pennsylvania. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
Instruction: 
If driving, slow down, use your low-beam headlights, and leave plenty of distance ahead of you.
Area Description: 
Juniata; Union; Snyder; Montour; Northumberland; Columbia; Perry; Dauphin; Schuylkill; Lebanon; Cumberland; Adams; York; Lancaster
Forcast Office: 
NWS State College PA