Dense Fog Blankets Multiple Pennsylvania Counties, Creates Hazardous Driving
Visibility drops to quarter-mile or less across seven Pennsylvania counties as dense fog creates dangerous driving conditions Sunday morning.

HARRISBURG, PENNSYLVANIA β Dense fog with visibility as low as one-quarter mile blanketed multiple Pennsylvania counties early Sunday morning, prompting the National Weather Service to issue advisories warning of hazardous driving conditions across seven counties.
The fog advisories, issued by the National Weather Service offices in State College and Mount Holly, affected Elk, McKean, Warren, Schuylkill, Carbon, and Monroe counties. Visibility dropped to one-quarter mile or less in the affected areas, creating dangerous conditions for morning commuters.
Northern Counties Face Morning Fog
The National Weather Service State College office issued a dense fog advisory at 5:21 a.m. EDT for Elk, McKean, and Warren counties, with conditions expected to improve by 9:00 a.m. EDT. The same office also issued a separate advisory for Schuylkill County, where fog conditions were forecast to persist until 10:00 a.m. EDT.
Weather sensors along Interstate 81 reported visibility of less than 700 feet in some areas, according to the National Weather Service. The reduced visibility created particularly hazardous conditions on major transportation routes through the region.
Eastern Counties Also Affected
Carbon and Monroe counties in eastern Pennsylvania also experienced dense fog conditions, with the National Weather Service Mount Holly office issuing advisories that began Saturday evening. The advisory for these counties, first issued at 5:57 p.m. EDT on Saturday, was updated at 2:30 a.m. EDT Sunday morning and remained in effect until 10:00 a.m. EDT.
The fog advisories warned drivers of hazardous conditions due to the severely reduced visibility. Meteorologists recommended that drivers reduce speed, use low-beam headlights, and maintain greater following distances when traveling through the affected areas.
Safety Recommendations for Drivers
The National Weather Service emphasized that the low visibility could make driving conditions particularly dangerous during the Sunday morning hours when many commuters would be traveling. Officials advised motorists to exercise extreme caution when driving through the fog-affected counties.
The dense fog conditions developed overnight Saturday into Sunday morning, with multiple advisories remaining active through the morning hours. All advisories were scheduled to expire by 10:00 a.m. EDT at the latest, with some northern counties expected to see improvement as early as 9:00 a.m. EDT.
The weather phenomenon affected both mountainous regions in northern Pennsylvania and the more populated areas in the eastern part of the state, creating widespread travel concerns across a significant portion of the commonwealth.


