Pittsburgh, PA – A dense fog advisory is in effect across several western Pennsylvania counties until 9 a.m. Wednesday, significantly reducing visibility and creating hazardous travel conditions.
According to the National Weather Service in Pittsburgh, affected areas include Mercer, Venango, Forest, Lawrence, Butler, Clarion, Jefferson, Armstrong, and Indiana counties. Visibility in these regions is expected to drop to a quarter-mile or less, making driving especially dangerous in the early morning hours.
Motorists are advised to use extreme caution while traveling, slow down, turn on headlights, and allow for extra stopping distance. The advisory warns that the thick fog could cause sudden changes in visibility, particularly on rural roads and higher elevations.
Residents should also be aware of potential delays for morning commutes and school transportation. The dense fog is expected to dissipate as temperatures rise after sunrise, improving driving conditions by mid-morning.
Drivers are encouraged to check local traffic updates and weather reports before heading out. The National Weather Service urges travelers to remain vigilant until visibility improves.
