sentences:  However, the intensification was slowed somewhat by the proximity of Iris to the west, whose outflow interfered with that of Humberto.Early on August 24, Humberto strengthened into a Category 2 hurricane, finally forming a well-defined eye, as it slowed down and entered a Fujiwhara interaction with Iris.That afternoon, while still moving west-northwest, Humberto reached its peak intensity of 110 mph (175 km/h), just under Category 3 intensity.