2AM radar update: As expected, snow has now filled in across most of the area and the atmosphere is well saturated allowing it to begin reaching the ground and accumulating. You can see a localized heavier area aligned west to east from Zanesville to Latrobe | US National Weather Service Pittsburgh PA

Here is the latest radar and severe weather update. | US National Weather Service Pittsburgh PA

Radar update as of ~1030AM Tuesday: Progressive area of t-storms continue to advance east of the greater PGH metro, now impacting eastern ridges of PA and WV. Current severe threat remains limited, with heavy rainfall the biggest concern at this time. | US National Weather Service Pittsburgh PA