The 18z GFS keeps the ULL around through day 10, ending up in the Gulf of Maine as yet another closed 500mb low enters the TN Valley. The current system almost moves into a 50/50 position, reinforcing the block. Meanwhile another major rain maker cuts across the Deep South with aim on the East coast around mid-month, trying to cut off again. It's almost a nightmare scenario verbatim for warm weather enthusiasts in the Northeast.