These dates, adopted by convention, historically describe the period in each year when most subtropical or tropical cyclogenesis occurs in these regions of the Pacific Ocean.

[17][18] In late October, Hurricane Kristy formed off the coast of southern Mexico, in-part from the remnants of Atlantic basin Tropical Storm Nadine, and intensified to Category 5 strength out in the open ocean.

The system eventually organized into a tropical depression at 12:00 UTC on July 24, about 400 nautical miles south of Cabo San Lucas.

[21] Bud moved to the northwest, and despite being embedded in an environment of dry air,[22] the system was able to strengthen modestly and achieved its peak intensity at 6:00 UTC on July 25, with maximum sustained winds of 60 mph (97 km/h) and a minimum barometric pressure of 1,001 mbar (29.6 inHg).

The disturbance developed sufficiently organized deep convection to become a tropical depression at 12:00 UTC on July 31, several hundred miles southwest of Manzanillo, Mexico.

[27] However, Carlotta continued to move westward and encountered cooler sea surface temperatures (SSTs), causing the cyclone to weaken to a tropical storm at 12:00 UTC on August 4.

[30] The disturbance began to quickly organize on August 2, and the formation of a well-defined circulation and tropical-storm-force winds led to its designation as Tropical Storm Daniel the following morning.

[32] Moving northeastward around Hurricane Carlotta's larger circulation, Daniel became increasingly embedded and less distinctive from the surrounding Intertropical Convergence Zone.

[40][41] Emilia reached its peak intensity early on August 7 with maximum sustained winds of 70 mph (115 km/h) and a minimum central pressure of 988 mbar (29.2 inHg).

[44] The storm degenerated into a post-tropical remnant low by 03:00 UTC on August 9, about 980 mi (1580 km) west of the southern tip of the Baja California peninsula.

The storm reached its peak intensity early on August 6, with maximum sustained winds of 65 mph (105 km/h) and a minimum central pressure of 993 millibars (29.3 inHg).

[57][58] Drier air and continued passage over marginally warm SSTs caused Gilma to weaken again, and the storm dropped below major hurricane status for the second time on August 25.

[60][61] Gilma would continue rapidly weakening under unfavorable conditions with extreme wind shear, and dissipated on August 29, approximately 185 miles (300 km) east-northeast of Hilo, Hawaii.

A boat stranded east of Hawaii was rescued ahead of the approaching storm by the United States Coast Guard and Navy, with one deceased person found on board.

[79] Four days later, on August 22, a broad area of low pressure producing disorganized showers and thunderstorms primarily west of its center formed far south of the southern tip of the Baja California peninsula.

[82] Hector strengthened slightly on August 26 and reached its peak intensity, with maximum sustained winds of 60 mph (95 km/h) and minimum central pressure of 998 mbar (29.5 inHg).

[91] Stalling near Sinaloa over the Gulf of California, Ileana eventually weakened to a tropical depression early on September 15 as its deep convection dissipated.

Mudslides and severe flooding blocked roads in San José del Cabo; inclement weather resulted in cancelled flights and port closures.

[96] The system became better organized the following day and attained a closed surface circulation, resulting in the formation of Tropical Depression Ten‑E on the afternoon of September 22, about 175 mi (280 km) south of Punta Maldonado, Guerrero.

[98] While moving slowly to the north-northeast on September 23, caught in the southwesterly flow associated with the monsoon trough near Central America,[99] John commenced to rapidly intensify.

They also showed that an elongated trough partly associated with John's remnants appeared to be forming off the coast of southern and southwestern Mexico amid conditions conducive to new tropical development.

[108][109] Continued interaction with land caused John to weaken back to a tropical storm, and it made landfall for a second and final time at at 18:00 UTC on September 27.

[112] The president of the Acapulco Chamber of Commerce, Services and Tourism, Alejandro Martínez Sidney, stated that losses from John in Guerrero were estimated to be between $1–1.5 billion pesos (US$51.7–77.6 million).

[116] This trend continued, and on the afternoon of October 1, Tropical Depression Eleven-E formed about 90 mi (150 km) south-southeast of Salina Cruz, Oaxaca.

[120] The system's remnants interacted with a stationary front and an area of low pressure in the Gulf of Mexico, contributing the formation of Hurricane Milton in the Atlantic basin.

[121] Although it remained weak, the system brought heavy rainfall to seven Mexican states, causing rivers and streams to overflow, resulting in two fatalities.

[123] On October 20, the remnants of Atlantic basin Tropical Storm Nadine entered the eastern Pacific, where they helped facilitate the development of a trough of low pressure in the Gulf of Tehuantepec.

[134] The system continued to lose organization, as its eye became cloud filled, and the convective pattern became more asymmetric on account of southerly to southwesterly wind shear.

[138] Further degradation took place, and Kristy transitioned into a post-tropical cyclone on the morning of October 27, far to the west of the southern tip of the Baja California peninsula.

[144] Late on November 5, showers and thunderstorms associated with a well-defined low pressure system southwest of the southwestern coast of Mexico began showing signs of tropical development.