StormHound -- what he is referring to is the old boundary left behind partially in Frances' wake. On water vapor imagery, there is a hint that a new low is trying to form on this boundary west of Tampa. However, at this point, it is a very weak feature.

What tends to happen with these cases is that the low forms, ejects towards the notheast along the boundary, and the whole boundary lifts a bit further north and back westward. If anything in the short term, this low forming will keep Ivan on a slightly more westward path. I doubt it will be enough to turn Ivan into Central Florida, but stranger things have happened.

By the way, for those wanting to try to pick out the formation of new lows on water vapor imagery (meaning these systems are in the mid to upper atmosphere), look along boundaries for an "S" shape. Just to the left of that "S" will be where you find the new low. Thus, in that boundary for example, you see a slight "S" curve off of the Florida coast. Just behind this, a low is forming.