Since I first noted the Florida straits low yesterday afternoon, it seems, just from radar, that the low has actually moved about 100 miles west and is now centered over Key West. Radar confirms, to me at least, that it is a closed low; but development is being inhibited by the upper feature. This will all change, IMO in a day or so as ridging should appear in the lower gulf coast which could support development. I would agree with the NHC that the next 48 hours will tell with this.
The Bahamas system may go sooner, as it seems ready to rotate out over the influence of the upper low which was two days ago to its NW and now seems about to play it self out to its SW. This should continue generally toward the SC coast, and I think will be picked up in two-three days by the trough in the midwest now.
This same trough will create the ridging over the GOM during that same period and influence th development and future of that system too.
My guess: both get classified, Bahamas first with the GOM system a landfalling TS Monday or Tuesday, and the Bahamas system goes to sea.
We'll see!