Feels like one of those "sleet line" things. The warm air intrusion is definitely trending further and further south. On the 12Z GFS yesterday the high in Erie on Thursday would be 75, now it is 60 for the same time frame as the front off the mid west low is much farther south. So I agree if we end up just to the south of that front over Northern PA we in the 80's. Not sure about the 90's being touted below us.