State College, Pa. – Commuters across central Pennsylvania are waking up to thick, patchy fog Thursday morning, with some areas seeing visibility drop to a quarter mile or less. The National Weather Service says the densest fog is developing on ridgetops and in valleys, particularly near rivers and streams, and will linger until around 9 a.m.
According to the National Weather Service office in State College, the affected region stretches from Warren and McKean counties in the northwest through Centre and Blair counties into the lower Susquehanna Valley, including Dauphin, York, and Lancaster. Drivers should be prepared for sudden drops in visibility and allow extra time for the morning commute.
Motorists are advised to slow down, use low-beam headlights, and keep extra distance between vehicles. Visibility can change rapidly, especially along rural roads and major corridors such as I-80, I-99, and the Pennsylvania Turnpike.
Conditions are expected to steadily improve after sunrise as the fog lifts, with clear skies returning for the rest of the day. No additional advisories are currently in effect, but motorists should remain alert during early morning hours in the coming days if humidity remains high overnight.
