sentences:  However, cooler waters eventually caught up to Humberto and it began to weaken once again early on August 31 as it tracked into the north Atlantic.That afternoon, Humberto weakened to a tropical storm as its circulation became embedded into a circulation of a nearby extratropical low in a high-shear environment.It continued to weaken that evening, and early on September 1, the tropical storm was absorbed by the larger system.