Harrisburg, Pennsylvania – Pennsylvania faces a 5% to 30% chance of winter storm impacts this weekend, with probabilities varying by region as a developing coastal storm tracks northward along the East Coast between 7 p.m. Friday and 7 p.m. Monday.
According to the National Weather Service Weather Prediction Center, a strengthening low-pressure system is expected to form off the Southeast coast Saturday before moving northward offshore of the Mid-Atlantic on Sunday. While the core of the storm is forecast to remain east of Pennsylvania, colder air in place across the state could support wintry precipitation if the system tracks closer to the coast.
Regional probabilities across Pennsylvania include:
- Eastern Pennsylvania: 20%–30% chance, highest near the I-95 and I-78 corridors
- Northeastern Pennsylvania: 20%–30% chance, including higher elevations
- Central Pennsylvania: 10%–20% chance
- Western Pennsylvania: 5%–15% chance, mainly light precipitation
Potential impacts include periods of snow or rain-snow mix, gusty winds, and reduced visibility, particularly late Saturday into Sunday. Major travel routes such as Interstate 80, Interstate 81, and the Pennsylvania Turnpike (I-76) could experience slick conditions if snow develops, especially in higher elevations and untreated areas.
Forecasters emphasize that confidence remains low, and even small changes in storm track or temperature profiles could significantly alter snowfall potential across the state.
Residents are encouraged to monitor official forecasts and remain prepared for changing conditions. Weekend commuters, students, and travelers across Pennsylvania should allow extra time and remain flexible with travel plans as forecast details continue to evolve.
