12z GFS now has a surface low off the Jersey coast, which allows precip to fill in better. Looks like 0.5" QPF line bumps back from Delaware to the Harford/Cecil County line.
3:30 pm was when Mt. Holly would push their products. You always wanted to see the crawl on the lower third go "...WINTER STORM WARNING FOR THE GREATER DELAWARE VALLEY..." Pure magic.
Wild Guess: NWS just modified the winter weather advisory for DC and I-95 south. Wonder if they're going warnings for Carroll, NW Baltimore, and NW Harford?
Yes it is. It's a real shame this event doesn't have even another 0.1" - 0.25" liquid to work with. We're really on the cusp of a respectable event here.
Based off the 12z Euro and 18z GFS, it would not surprise me to see Mt. Holly hoist a watch for their zones on Maryland's eastern shore into Delaware and S. Jersey.
The LWX AFD effectively highlights the strong dynamics at work. It would not surprise me to see someone between Baltimore and Philly/S Jersey get half a foot of snow from this.