There are a few respected weathermen predicting doom, which isn't necessary. They get paid to be dramatic, but their effort to get the best ratings is disrespectful of the ignorance of their audience and demeans the reputations of all meteorologists. Scaring the crap out of people is not something to be proud of, unless you run a haunted house, or are Stephen King.
At this time, even the National Hurricane Center isn't forecasting an exact landfall position or strength for Isaac. They have an idea, but aren't willing to bet.
So, stop the crap. Thinking you're saving lives is BS and only endangers people that were never in danger in the first place.