Isaac keeps residents busy along Florida's west coast

TAMPA, Fla. -- Residents along Florida's west coast are hitting the stores for batteries, flashlights and bottled water as Tropical Storm Isaac inches closer.

Forecasters expect Isaac to grow into a hurricane over the next 48 hours.

The storm may pose a threat to the Republican National Convention next week.

Tampa's mayor says he will cancel the convention if weather gets too bad.

On Thursday, Governor Rick Scott issued this warning.

"Every needs to be prepared," Scott said. "Almost all of the state is covered by this risk. So, everyone needs to be prepared, have three days of food and water."

The storm could pass over Cuba over the weekend.

The U.S. military has already begun evacuations at Guantanamo Bay.

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