[rarestia]

The actual trough across the southeastern US would have to degrade sooner for that to happen. Distinct ridges and troughs will always steer tropical systems, and there's a very distinct trough coming down across the midwest right now. This is the forecast map for Friday:

Notice the trough across the southeast. That acts as a barrier to any systems that come up from the Caribbean (i.e. Isaac). It will gradually degrade as Isaac gets closer, but not soon enough to keep the system from turning north then east.

[Fawn]

OK, I see what you are saying. I don’t understand that map completely, but I understand what you mean....well....will get prepared. I’m on the east coast...by WPB. I’m bound to get rained on at least. :)

[Fawn]

There is also a trough over Cuba? Won’t that push Iassac over too?