Check out the EPS- 6z vs 0z for the same time.
The 0z mean still phased in some of the energy from the trough out west in the panels beyond this, with low pressure lifting further north towards the GLs as the high pressure overtop slides eastward. There is more separation from the western energy on the 6z run, and the HP to the north is in a better position. Looks like the low would track more east than north if the run continued beyond 144.