From another board on the latest PGH NWS discussion
"I believe they are wrong but they are thinking the warm nose cuts further north through West Virginia. I think many mets (outside of content now) are underestimating the QPF that's going to come north. Part of it is that you really don't want to bust by predicting too high because you've gotten the masses in a frenzy, but I also feel that what has been shown this year is that you need to add 10-20% to the performance of the system. Maybe the warm nose does cut in, but I'll take my chances and say that that low doesn't hang on as long."