Overview
- Winter storm warnings begin Saturday evening, the entire Pittsburgh area is under a warning through Monday afternoon, and Gov. Josh Shapiro has issued a disaster emergency proclamation.
- Forecast maps show a broad central corridor from Somerset to Lancaster and north to Elk and Tioga likely to receive 12–18 inches, with locally higher totals in the Laurel Highlands.
- Pittsburgh is projected for roughly 8–12 inches, with flakes starting around 8:30 p.m. Saturday, widespread snow by about 5 a.m. Sunday, and the heaviest period after 7 a.m.
- Philadelphia is forecast near 10–11 inches, though a Sunday afternoon mix with sleet and freezing rain could trim snow totals and create icing.
- Central Pennsylvania could see snowfall rates near one inch per hour Sunday morning into afternoon, followed by a prolonged cold stretch with single-digit temperatures and morning lows near 0° in the region.