It's because as it shifts SE, it does so due to the fact that it is disorganized. The more disorganized it is, the lower the QPF. The RGEM tends to be deadly in this range, so I would be cautious as to using the NAM verbatim right now. Likewise, last night's storm would show that there is the potential for more precip. Also, the SPC is expecting strong storms in the south tomorrow night, thus latent heat comes into play. All of that being said, I would expect the POTENTIAL for this to be a rather significant (6+) snow event for the tri state. Sent from my SM-N960U using Tapatalk