There’s a late shitstreak that drops south toward New England that keeps the heights suppressed a little longer than they would be otherwise. That PV lobe is pivoting and dropping southeast at this point and the heights (that string of vorticity over us) really wants to move north more if that other s/w wasn’t there.
Maybe in the end it wouldn’t matter, but anything that can relax the gph field I’d think would be a benefit