Here is a discussion on the 18z GFS, FWIW:
http://www.easternuswx.com/bb/index.php?showtopic=41168
As i mentioned I am seeing a big change in the weather here in houston, looks like a low is forming/moved in. maybe models are picking this up?
If nothing else changes and she shoots the Yucatan gap, we'd better hope it hits Kenedy County.