heat content, good outflow, and lack of vertical shear allowed the hurricane to begin a burst of rapid intensification, dropping 1.46 mbars per hour. While reducing in size, Adolph reached its peak strength of 145 mph (230 km/h) on May 29. Dvorak classifications reported a T-number of 7.0 for Adolph, equivalent to a low-end Category 5 hurricane on the Saffir-Simpson Hurricane Scale. However, because of a lack of data from the storm via Hurricane Hunters, these strength measurements may be disputed. After peaking in intensity, Adolph weakened while decelerating westward due to an eyewall replacement cycle; by May 30, the winds dropped to 115 mph (185 km/h) as the eyewall became cloud filled and became less distinct. The trend of weakening continued as the eye definition and convection oscillated in presentation. On June 1 Adolph deteriorated into a tropical storm as convection became exposed from the increasingly elongated center. As the storm passed over increasingly colder waters and into an area of stable air, the system weakened more quickly, and dissipated on June 1, while located about south-southwest of Baja California. The remaining clouds persisted for a few days before dissipating entirely. Impact and records Though Adolph never moved ashore, its close approach to land as well as its slow, unpredictable movement resulted in the issuance of a tropical storm warning and a hurricane watch for southern Mexico around the time when the cyclone attained major hurricane strength. The threat for heavy rainfall was mentioned for areas from Puerto Ángel to Zihuatanejo when Adolph was a depression and later from Acapulco to Lázaro Cárdenas. The government of Mexico expressed concern that rain and waves from Adolph would affect Oaxaca, Colima, Jalisco, Michoacán, and Guerrero. The hurricane was responsible for the closure of ports in Acapulco to small vessels. Despite the tropical storm warning and forecasts of minor impacts, no tropical storm force winds from Adolph were reported on land; the only reported tropical storm force winds were given by a ship called the Seurat, which recorded sustained winds of on May 29. Outside of some reports of rain and heavy surf, no reports of casualties or damages were received in connection with the storm. When Adolph reached Category 4 strength on May 29, it became the strongest hurricane to form in the East Pacific basin in May, a record not surpassed until 2014's Hurricane Amanda attained peak winds of 155