Subsequent to developing, deep convection began developing and increasing around the center.
It emerged into the Gulf of Mexico on June 4, and developed deep convection on its eastern side.
Later on October 22, the storm began re-developing deep convection, though it still maintained a sheared system appearance.
Initially, the system absorbed nearby dry air, although the storm was able to continue developing deep convection.
Upon being designated, Tropical Depression Fifteen developed deep convection close to, and to the east of, the center of circulation.
Over the next 24 hours, the low began acquiring tropical characteristics, mainly from developing deep convection on its north and east sides.
From the night of July 17 through July 18, Danny quickly developed deep convection and banding features in the favorable environment of the Gulf of Mexico, and reached hurricane status later on July 18.
The tropical wave moved through the Caribbean Sea, and developed deep convection due to more favorable conditions over the Gulf of Honduras on August 28.
Despite increasing wind shear of over 50 mph (80 km/h), Paul remained a tropical storm while its circulation remained on the southwest side of its developing deep convection.
The system quickly developed deep convection and a low-level circulation, and on September 1 it organized into Tropical Depression Nine-E while located about 170 mi (270 km) off the southwest coast of Mexico.
