Definitely a trend south from 6z. Maybe convection playing a role in that. But, sometimes surface lows don't have a big effect on the upper levels if it's already torched. The surface low could be quite out of place compared to like 850 low etc.
I still can't wrap my head around that. Maybe Legro can man up and do a case study. I mean I understand on a high level, but that area off rt 109 near Castle in the Clouds was leveled. There is a golf course there that was gone.