Pittsburgh, PA – A developing winter storm Sunday could bring changing snow conditions across western Pennsylvania, with colder air holding firm to the north while warmer air aloft increases the risk of wetter snow, sleet, or ice farther south.
According to the National Weather Service in Pittsburgh, confidence is highest that areas north of the city will remain cold enough for all snow, with lighter, drier flakes that are easier to manage on roads. Snow-liquid ratios in these areas remain high, meaning fluffier snow with lower water content.
Farther south — including areas near and south of Pittsburgh into parts of West Virginia — forecast confidence decreases. Meteorologists are monitoring a “warm nose,” a layer of warmer air above the surface that could push north Sunday afternoon or evening. If that happens, snow could become heavier and wetter, and in some locations may mix with sleet or freezing rain.
The National Weather Service noted that even small amounts of sleet or ice can significantly impact road conditions and increase the risk of power outages, especially where wet snow accumulates on trees and power lines.
Forecast guidance shows snow-liquid ratios dropping Sunday afternoon and evening in southern areas, a sign of denser, heavier snow. If the warm layer advances farther north than expected, Pittsburgh itself could briefly see wetter snow before colder air returns late Sunday night into Monday morning.
Colder air is expected to reestablish across the region overnight, allowing snow to transition back to drier conditions early Monday.
Residents are urged to monitor updates closely, especially if traveling Sunday afternoon or evening, as small temperature changes could lead to big differences in impacts.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
Follow us on Instagram & Facebook for more relevant news stories and SUPPORT LOCAL INDEPENDENT NEWS! Have a tip? Message us!
