 An area of disturbed weather extended from the northwestern Caribbean Sea to the western Atlantic Ocean on October 4, possibly related to the remnants of Hurricane Karen. The system slowly organized, developing a surface low pressure on October 8 to the northeast of the Turks and Caicos Islands. Convection associated with the storm steadily increased as the low moved towards the northeast. By October 11, the low organized into Tropical Depression Fifteen about 740 mi (1,190 km) east-southeast of Bermuda, after the convection had persisted for about 12 hours. An upper-level low to the west caused strong southwesterly wind shear, which inhibited development.
