Dennis is in a rapid intensification mode currently, the CDO is consolidating nicely and he is slowing down which will lead to more strengthening. Local mets around here are saying it all depends on the ridge weakening over Fla in the upcoming days which will determine how close it gets to the west side of the Fla Penninsula as it tracks into the GOM.
I think the keys (especially lower) will have the greatest risk and then from the Panhandle westward long term., a lot depends on the speed of the system.
I would be surprised if Dennis does not become a Cat 1 Hurricane by tomorrow afternoon and from there all bets are off as the conditions appear favorable for further intensifcation.