The tropical depression began as a tropical wave that entered the Atlantic Ocean on August 8, 2005. The wave moved west. It began to show signs of becoming stronger on August 11. The system formed into Tropical Depression Ten at 1200 UTC on August 13. At the time, it was about to the east of Barbados. When the storm was first called a tropical depression, it had a large area of thunderstorms, with curved rainbands.