"Severe Winter Weather Returns to Pittsburgh Area, Impacting Tuesday Commute"

Parts of the Pittsburgh area, including Clarion and Jefferson Counties, are under a winter storm watch for the potential of heavy, wet snow as an approaching storm system brings rain later Monday evening. The storm track is uncertain, with models disagreeing on where the low will track and the rain/snow changeover spot. Tuesday morning has been declared a First Alert Weather Day with a wet, possibly white, and wintry mix for the commute, and chillier air will bring lows back below freezing through the week, with rain and snow showers possible from Wednesday through Thursday.