Early on June 16, Carlotta's forward motion began to fluctuate, changing from northeast to southeast in six hours.[8] The storm began to intensify again around 06:00 UTC as it stalled off the coast of Mexico.[2][9] Soon after, the cyclone began moving in a northerly direction.[10] Over the next twelve hours, Carlotta experienced little change in organization before peaking at 00:00 UTC on June 17, with maximum sustained winds of 65 mph (100 km/h) and a minimum central pressure of 997 mbar (29.44 inHg) while located only 30 mi (50 km) south-southeast of Acapulco.[1] Around that time, the NHC noted that the system's structure had improved significantly, with a contracting eye and more symmetric eyewall.[11] As the system started tracking towards the northwest, Carlotta began to weaken because of increasing interaction with land and northerly wind shear.[12] Around 18:00 UTC on the June 17, the storm weakened into a tropical depression after lacking organized deep convection for several hours.[1][13] Over the next day, the depression continued to weaken before degenerating into a remnant low on June 19 at 00:00 UTC.[1] Shortly afterwards, Carlotta's upper-level circulation decoupled entirely and drifted towards the southwest, while the low- and mid-level remnants remained.[14] The system's remnants dissipated around 06:00 UTC while located offshore of the Mexican coast between Manzanillo and Zihuatanejo, having never made landfall as a tropical cyclone.[1]