The Philadelphia region is preparing for a winter storm expected to bring various forms of precipitation starting Friday afternoon. The National Weather Service indicates near 100% confidence in winter weather for the area, though the exact type and amount of precipitation are uncertain. Philadelphia could see between 1 and 4 inches of snow, with light precipitation potentially continuing into Saturday morning. Areas in northern Delaware, far southern New Jersey, and Southeastern Pennsylvania may receive 1 to 3 inches of precipitation, while eastern Pennsylvania and much of New Jersey could receive 4 to 7 inches. The precipitation may vary from snow to sleet, freezing rain, or rain, depending on local temperatures and timing.