Tropical Storm Olga weakened Wednesday after battering the Dominican Republic and Puerto Rico with heavy rains that caused flooding and landslides. At least four deaths were blamed on the storm.

A tropical storm warning remained in effect for the southeastern Bahamas and the Turks and Caicos islands. Other warnings and watches for the Haiti and the Dominican Republic were canceled.

Olga was about 75 miles south of Guantanamo, Cuba, according to the National Hurricane Center's 10 a.m. EST advisory. The storm was moving to the west at 23 mph.

Olga's winds had dropped to 40 mph and forecasters said the storm could dissipate later in the day.

The storm was expected to drop up to 4 inches of rain over Cuba, with isolated areas receiving up to 8 inches. In Hispaniola, up to 6 inches of rain, with some isolated areas receiving up to 10 inches, was forecast.

Olga formed Monday night in the Caribbean, more than a week after the official end of the 2007 Atlantic hurricane season. That season ended Nov. 30 with 14 named storms, including six hurricanes.