As cold temperatures and biting winds sweep across south-central Pennsylvania, residents are bracing for frigid conditions during what has been designated an “Impact Day.” Chief Meteorologist Christine Ferreira provided a detailed forecast, indicating that morning temperatures will be uncomfortably low, starting at just 14 degrees in Harrisburg, 10 in Lancaster, and dipping down to a mere 8 degrees in Selinsgrove. The wind, blowing steadily at 5 to 15 mph, will dramatically lower the wind chill, making it feel as cold as -1 degrees in Lancaster and -6 degrees in Lewistown.
By morning, wind chills could descend below zero throughout much of the region, with temperatures improving slightly in the afternoon, though still remaining in the single digits. Tonight, calmer winds are expected, leading to less severe wind chills, but temperatures will continue to be quite low, ranging from 6 to 10 degrees.
Ferreira noted that tomorrow will start with some sunshine but clouds will increase as the day progresses, accompanied by a possible snow shower late in the day. Temperatures are projected to rise significantly, with highs reaching between 32 and 36 degrees, offering a respite from the extreme cold.
Looking ahead, a weak weather front is expected on Thursday, potentially bringing a slight chance of snow showers, but temperatures may warm up to around 40 degrees. However, a storm system forecasted to move through the Mid-Atlantic region this weekend could result in light to moderate snowfall, particularly on Sunday. Current projections suggest a few inches of snowfall, but the exact timing and totals remain uncertain.
In the coming week, residents will continue to experience chilly temperatures, with the Arctic air settling in, keeping highs in the teens to near 20 degrees. The community is advised to stay warm and keep informed about the evolving weather conditions as the winter season continues to unfold.