The storm's circulation became more organized and Delta became a tropical storm on November 24. It strengthened further to its maximum strength of 70 mph (110 km/h) winds later that day, just below hurricane strength. The official forecast at this time predicted that Delta would strengthen further and become a minimal hurricane, but this did not happen. Anyhow, Delta kept this strength for a few days as it moved slowly and zig-zaggedly in the central Atlantic. As wind shear increased over the storm, a Delta began weakening on November 25 and by the end of the next day Delta had weakened into a very weak tropical storm. Some of the computer models showed that the weakening tropical storm could be absorbed by a developing low to the west, which a few days later became Hurricane Epsilon. This did not happen, and Tropical Storm Delta began to move to the northeast.