 Maintaining its peak intensity for over a day, the hurricane gradually slowed its forward motion and weakened. By September 13, Debbie's motion became influenced by the Westerlies, causing the system to accelerate east-northeastward. The system passed over the western Azores as a minimal hurricane on September 15. At this point, there is uncertainty as to the structure of Debbie, whether it transitioned into an extratropical cyclone or maintained its identity as a tropical system. Regardless of which took place, the system deepened as it neared the British Isles, skirting the coast of Western Ireland on September 16. Shortly thereafter, the system was confirmed to have become extratropical as it continued towards the northeast. The remnants of the storm later turned eastward, striking Norway and Russia, before dissipating on September 19.
