Possibility of first snowfall in the Pennsylvania mountains on the 13th–14th

Pennsylvania’s northern and western mountain regions could see their first accumulating snowfall of the season from late night Jan. 12 through Jan. 13 U.S. Eastern Time, with the National Weather Service’s State College office flagging the highest likelihood in the northwest highlands and Laurel Highlands, where overnight rain may turn to snow. Central ridges and valleys face more uncertainty because precipitation type and amount depend on the low-pressure system’s track as it forms and moves toward the coast. The event matters as an early test of winter conditions in a key eastern U.S. region, and the next thing to watch is how the coastal low tracks and whether colder air arrives fast enough to shift rain to snow.