sentences:  Based on evidence of a weak warm-core, the system was re-designated as Tropical Storm Gabrielle late on September 8 about 185 miles (300 km) southeast of Cape Lookout, North Carolina.Vertical wind shear decreased as the storm passed over the Gulf Stream, allowing a strong convective burst to develop near the center.As it approached the coast of North Carolina, the center re-developed within the deep convection underneath the mid-level circulation, although increased northerly wind shear displaced the center of Gabrielle to the north of the thunderstorm activity.