Conclusions
lEnhanced PVA associated with a north-south oriented jet streak at 250 mb was the mechanism for genesis.
lHeight anomalies and absolute vorticity were greatest at 250 mb.  Temperature anomalies were greatest at 300-400 mb.
lAn enhanced pressure gradient on the western side of the low was maintained as the circulation propagated westward towards an upper-level ridge.
lEnhanced low-level advection of warm, moist air was linked to large potential vorticity aloft.