Posted from Bob Brecks blog, NOLA weather forecaster

""However, tonight's run of our VIPIR model (yes we pay Baron's Services to use it) indicates Gustav will make a northward turn on Friday across Cuba and head up the west coast of Florida. To me. our key day will be Friday. By then Gustav will either be heading where NHC puts it (still not in Gulf) and by then we'll need to start making decisions. IF VIPIR is correct, then the danger will be more to our east. The 3rd scenario could take Gustav farther to the south into the Yucatan.""

http://bobbreck.blogspot.com/

personnally not a big fan of viper but like some models every now and then it gets one right...