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NCEP GFS at 84 hours (run was Sat night) puts Isaac as a hurricane, probably a Cat3 hitting very near New Orleans. But wait…

Will this actually be what happens? There are many models out there and with each run they shift the outcome further west and intensity varies from Cat1 at landfall to Cat4. The key here is the longer Isaac can stay over 84-86 degree Gulf water and with there really not being anything out there (large-scale weather-wise) to disrupt it, this could be a huge news maker come Wednesday.

It is gonna be an interesting ride.