Isaac Ripping its Way Through Caribbean

Tropical Storm Isaac pushed its way into Cuba on Saturday after sweeping across Haiti's southern peninsula, where it caused flooding and at least three deaths, adding to the misery of a poor nation still trying to recover from the terrible 2010 earthquake.

Isaac's center made landfall just before midday near the far-eastern tip of Cuba, downing trees and power lines, and the storm's surge flooded the seaside Malecon in the picturesque city of Baracoa.

Forecasters said Isaac poses a threat to Florida Monday and Tuesday, just as the Republican Party gathers for its national convention in Tampa. It could eventually hit the Florida Panhandle as a Category 2 hurricane with winds of nearly 100 mph.