Tropical Storm Olga was the fifteenth named storm of the 2007 Atlantic hurricane season. In the second week of December, after the end of the hurricane season, a low formed east of the northern Lesser Antilles. It slowly became subtropical, and late on December 10, the NHC declared it "Subtropical Storm Olga" while just north of Puerto Rico. It was the first post-season storm since Tropical Storm Zeta in the 2005 season, making this season one of the few with activity both before and after the hurricane season. The storm made landfall on December 11 on the eastern side of the Dominican Republic. Later that evening, Olga turned into a tropical storm, just after making landfall. Olga tracked over Hispaniola and emerged in the Caribbean Sea. Unfavorable conditions caused Olga to weaken into a remnant low early on December 13.