Isaac heads to Florida after drenching Haiti, Cuba

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Shira Edllan Gervasi, of Israel, puts her name on plywood protecting a storefront in Key West, Fla., in anticipation of Tropical Storm Isaac on Saturday, Aug. 25, 2012. Isaac's winds are expected to be felt in the Florida Keys by sunrise Sunday morning. (AP Photo/Alan Diaz)Tourists in the Florida Keys mustered party faces and locals followed time-worn rituals as the islands prepared for a lashing Sunday from Tropical Storm Isaac after it swamped the Caribbean and shuffled plans for the Republican National Convention.

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