I was warned to stay on Rita last night when I enlightened folks as to the other features in the tropics that were of interest... So, at great risk (apologizies to the mod) I will just say this one thing... The subtropical low was a fairly unexpected event that has emerged in the past 2 days... Actually, the U/A counterpart the has assisted in boring a circulation down to the surface is more than partially to blame for Philippe's decay and encountering of hostile environments, as it began imparting shear fairly early in the game. As it were, the models had done a lousy job (now coming around to it however) in the evolution of the subtropical low and therefore is likely why they did not see the inevitable interaction with Philippe.

As a synoptic trained Meteorologist I can say that any threat to the East Coast is extremely minimal at this time. There are large scale changes occuring that will prevent westward movement of any tropically transition system in that area... Namely, teleconnections are beginning to slowly come around to the idea of troughing near 70w, which would immediately cause SW steering components, effectively protecting the E Coast.