Carlotta Reached Hurricane Strength Before Fading Across the Pacific
Hurricane Carlotta in 2024 developed from a tropical wave into a Category 1 hurricane over the eastern North Pacific during a brief early-season strengthening period. The cyclone formed on 31 July south of Mexico and reached peak intensity on 3 August near Clarion Island with maximum sustained winds of 80 kt. Carlotta remained offshore throughout its lifetime, producing no coastal watches or warnings and no direct fatalities reported by the National Hurricane Center. The storm later weakened over cooler waters before dissipating across the open Pacific.
Tropical Wave Over Mexico’s Waters: The Formation Path of Hurricane Carlotta
Carlotta’s origins traced back to a fast-moving tropical wave that left the west coast of Africa on 18 July 2024 before crossing the Atlantic basin. The disturbance moved through Central America on 26 July while maintaining deep convection and later entered the eastern North Pacific environment south of Mexico. Satellite monitoring showed increasing organization as the system developed a broader circulation over warm tropical waters.
The National Hurricane Center identified the system as a tropical depression at 0600 UTC on 31 July, located approximately 350 nautical miles south-southwest of Manzanillo, Mexico. At formation, Carlotta had maximum sustained winds of 30 kt and a central pressure near 1006 mb. The cyclone moved generally west-northwestward, remaining over open ocean rather than approaching the Pacific coast of Mexico.
The storm’s location kept its strongest effects away from major population centers in Mexico, the Caribbean, and the United States Gulf Coast. Maritime areas of the eastern Pacific experienced the primary influence from increasing winds and waves as the cyclone strengthened offshore.
Carlotta intensified gradually during the first days of August. By 31 July evening, the depression had become a tropical storm with winds near 43 kt. On 1 August, continued organization allowed the storm to strengthen further, with maximum winds reaching about 50 kt before a more significant intensification phase began.
The storm’s behavior exemplified the rapid development typical of short-lived eastern Pacific hurricanes that remain offshore.
Rapid Strengthening Near Clarion Island: Carlotta’s Short Hurricane Peak
Carlotta reached hurricane status on 2 August 2024 while moving west-northwestward across the eastern Pacific. The cyclone passed near the Revillagigedo Islands region, including Clarion Island, where surface observations contributed important information about the storm’s intensity assessment.
A weather station on Clarion Island recorded maximum sustained winds of 47 kt and a gust of 71 kt at 1245 UTC on 2 August. The station also measured a minimum pressure observation of 985.8 mb during the nearby passage of the storm. These observations supported the National Hurricane Center’s evaluation of Carlotta’s structure and intensity.
At 0600 UTC on 3 August, Carlotta reached its peak intensity near 18.8°N, 118.4°W. The hurricane produced maximum sustained winds of 80 kt, equivalent to 92 mph or 148 km/h, with an estimated minimum central pressure of 979 mb. The storm remained a Category 1 hurricane on the Saffir-Simpson Hurricane Wind Scale.
The strongest phase of Carlotta was concentrated over open water. No hurricane warnings or coastal watches were required because the center of circulation stayed offshore and did not threaten populated coastal regions. The lack of direct land interaction limited impacts across western Mexico and prevented significant damage reports.
Carlotta’s peak intensity was followed quickly by weakening. The hurricane began moving over progressively cooler ocean temperatures, reducing the heat energy available to sustain deep convection. Atmospheric conditions also became less supportive of maintaining a strong tropical cyclone structure.
Cooler Waters and Final Dissipation: The End of Carlotta’s Maritime Journey
After reaching its maximum strength on 3 August, Carlotta gradually weakened while continuing westward over the Pacific. By 4 August, the hurricane had declined from its peak intensity, with maximum winds decreasing as the circulation encountered a less favorable environment.
The cyclone transitioned back into a tropical storm during 4 August and continued losing organization on 5 August. Satellite observations showed weakening convection around the center, while the pressure gradually increased as the storm’s circulation weakened.
By 0600 UTC on 6 August, Carlotta had weakened into a post-tropical cyclone. The final advisory placed the system near 20.6°N, 128.5°W with maximum sustained winds of about 40 mph and a central pressure near 1003 mb. The remaining circulation continued westward before dissipating on 8 August.
Carlotta’s 2024 lifecycle lasted from 31 July through early August, beginning as a tropical depression south of Mexico, intensifying into a Category 1 hurricane near Clarion Island, and ending as a weakening post-tropical system over the open Pacific. The storm remained an open-ocean event, with its lifecycle tracked entirely by satellite from formation to dissipation.