Headline:
Dense Fog Advisory issued August 21 at 1:50AM EDT until August 21 at 9:00AM EDT by NWS Pittsburgh PA
Event:
Dense Fog Advisory
Urgency:
Expected
Effective:
August 20, 2026 - 10:50pm
Expires:
August 21, 2026 - 6:00am
Description:
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Portions of east central Ohio, northwest, southwest, and
western Pennsylvania, and northern and the northern panhandle of
West Virginia.
* WHEN...Until 9 AM EDT this morning.
* 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:
Harrison; Jefferson; Guernsey; Belmont; Monroe; Forest; Butler; Clarion; Jefferson; Beaver; Allegheny; Armstrong; Washington; Greene; Westmoreland; Westmoreland Ridges; Fayette; Fayette Ridges; Indiana; Higher Elevations of Indiana; Hancock; Brooke; Ohio; Marshall; Wetzel; Marion; Monongalia
Forcast Office:
NWS Pittsburgh PA
Sender:
w-nws.webmaster@noaa.gov