Transcript for Louisiana and Florida declare state of emergency

Back here at home tonight, and Louisiana and Florida declaring states of emergency tonight. Preparing for a possible hurricane, headed straight for the U.S. The massive tropical storm, Nate, already blamed for more than a dozen deaths in Nicaragua and Costa Rica. As it makes its way toward the gulf tonight. Let's get right to rob, because hurricane season is not over yet. Reporter: Yeah, David. Unlike the others, this is going to be moving quick lip. Right now, it's over land. Once it gets into the caribbean, look out. The waters there, very warm. We have hurricane watches that are posted for cancun, so, goes across the yucatan. Tomorrow night, into the gulf of Mexico, intensifying as it does. So strong? We're not quite sure, because it will be moving so quick lip. At least a category 1 goo new Orleans Sunday morning. Look at the warm waters, David. Mid 80s. That is fuel for hurricanes. All right, on the watch in the gulf tonight. Rob, thank you.

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