Looking at the latest spaghettis we need more info on what steers these things especially if we are anticipating a storm that does a u turn/circle. That would be unique at the very least.
There have been other hurricanes that have done similar loop backs.
Joe Bastardi @BigJoeBastardi 1h1 hour ago Pennsylvania, USA
Matthew left behind loop certainly possible. Look at these Esther 1961, Ginny 1963 , Ginger 1971 and Ivan 2004. Hermine crawled this year
https://twitter.com/BigJoeBastardi/status/783614147590184960
There is a ridge to the northeast of Matthew that is shifting westward (a subtropical system that developed off the coast of NC) that will stop northern movement and a mid- to upper-level trough approaching the eastern United States that will push Matthew to the east and then possibly back south as it gets caught between the two systems. And then there is TS Nicole although I dont know if that is having any effect.
Euro still likes the Loop idea for Matt... seems to keep him strong at Nicole's expense.