"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.

At least six people died on Monday due to heavy rains and flooding caused by the passage of tropical storm Oscar through the northeastern tip of Cuba, the Civil Defense reported. Satellite photograph