By late afternoon, Olga was just a broad mass of thunderstorms centered 65 miles north of Kingston, Jamaica. It was moving rapidly west on a course that would keep the center south of Cuba and take it over Mexico's Yucatan Peninsula by Saturday.
Olga's top sustained winds dropped to 35 mph (55 kph), below the threshold to be called a tropical storm, and forecasters expected it to dissipate further on Thursday.
Photo: Subtropical storm Olga is seen in the Caribbean in a satellite image taken December 11, 2007. (NOAA/Handout/Reuters)