"Some additional weakening is likely while Oscar moves across the mountainous terrain of eastern Cuba, but Oscar is forecast to be a tropical storm when it moves north of Cuba late today and then moves near the southeastern and central Bahamas on Tuesday," the hurricane center said Monday morning.

Tropical Storm Oscar is moving across eastern Cuba after making landfall as a Category 1 hurricane on the island already beleaguered by a massive power outage.

Up to 20 inches of rain is forecast in some regions of Cuba, which could trigger flash flooding and mudslides.

Tropical Storm Oscar is making it harder to restore power in Cuba after a massive, prolonged power outage that preceded the storm. Oscar is hitting a key region for power generation where at least two important power plants in the city of Holguín Santiago de Cuba are located.

Tropical Storm Oscar remained crouched over eastern Cuba, where it could drop more than a foot of rain as it crawls over the island nation at 3 mph. Oscar was a tiny, weak storm, with tropical-storm-force winds extending just 45 miles from the center and maximum sustained winds at 40 mph.

Forecasters predict Oscar to bring "heavy rainfall" leading to areas of "life-threatening flash flooding" across eastern Cuba.

Oscar, which the National Hurricane Center characterized as "very small," is the 15th named storm of the hurricane season.

Tropical Storm Oscar is moving across eastern Cuba after making landfall as a Category 1 hurricane on the island already beleaguered by a massive power outage.

Tropical Storm Oscar was moving across eastern Cuba after making landfall as a Category 1 hurricane on the island already beleaguered by a massive power outage.

Tropical Storm Oscar dumped heavy rain across eastern Cuba on Monday after making landfall as a Category 1 hurricane on the island already beleaguered by a massive power outage. Its maximum sustained winds blew at 40 mph on Monday as Oscar moved northwest at 6 mph.