Hurricane Gabrielle was a formidable Category 4 hurricane during its existence from September 17 to September 25, reaching peak sustained winds of 140 mph and a minimum central pressure of 948 mbar. The storm originated from a tropical wave that entered the Atlantic on September 11, yet initially faced impediments from dry and stable air. It showed signs of organization by September 16, transforming into Tropical Depression Seven the next day. As it moved across the Atlantic, the system became Tropical Storm Gabrielle despite possessing an ill-defined center. Challenges included westerly wind shear and dry air, though by September 19, the storm's structure improved with the formation of curved convective bands. By September 21, an eyewall developed, prompting Gabrielle's upgrade to a Category 1 hurricane and a rapid intensification into a major Category 3 hurricane as it pivoted northward. Continuing to strengthen, Gabrielle achieved Category 4 status with maximum winds by September 22, just east-southeast of Bermuda.
Despite its strength, Gabrielle's tenure as a major hurricane was short-lived as it faced increased wind shear while tracking east-northeastward. The storm began to weaken on September 23, dropping below major hurricane status as the adverse atmospheric conditions intensified. By September 25, Gabrielle lost its deep convection, and the structure began to collapse, leading to its transition into a post-tropical cyclone. Through its life cycle, Hurricane Gabrielle illustrated the dynamic interplay of atmospheric conditions affecting tropical cyclones, featuring phases of significant development and subsequent weakening driven by environmental factors such as wind shear and dry air. This transformation underscores the complex mechanisms governing hurricane intensity and duration as they traverse varying oceanic and atmospheric environments.