Well there are two main pieces. First one is the northern stream wave currently over baffin bay, this one is supposed to retrograde to the hudson bay (thanks to the GL block) and do a loop-a-loop there before it swings down into the conus.
The southern piece is now in the midst of a fast pac jet just west of the aleutians. It’ll become a new GOA low, but a piece of it will break off, enter the conus tomorrow or Wednesday, and become the southern stream s/w that eventually phases with the northern piece.
Clear as mud?