These dates conventionally delimit each year when most tropical cyclones form in the northeastern and central Pacific Ocean.

[1] This season was relatively uneventful; since no tropical cyclones made landfall, there were no reports of casualties or damage.

[4] The season had an early start when Carmen crossed over the International Date Line in April.

Kay lasted for fourteen and a half days, which was the fifth-longest-lasting Pacific hurricane at the time.

[1] Agatha originated from a tropical depression that formed 400 mi (640 km) south-southwest of Acapulco on June 9.

After becoming better organized, EPHC upgraded the depression into a tropical storm later that day, giving it the name Agatha.

[2] A disturbance south-southwest of Acapulco developed a circulation and was designated Tropical Storm Blas on June 16.

It remnants remained, and cloudiness and moisture associated with the cyclone were carried into the Continental United States by an upper-level trough.

[2] Celia's remnants and moisture brought rain to Santa Barbara County, California, on the last two days of June.

[2] An area of disturbed weather developed gale-force winds and a cyclonic circulation and was upgraded directly to tropical storm status on July 12.

It then steadily weakened after that, and dissipated over cool waters shortly after becoming a tropical depression on August 7.

Isis headed generally west-northwest and peaked as a Category 2 hurricane on August 8.

Isis then weakened, becoming a tropical storm on August 10, turning to the west, and dissipating the next day.

[2] An area of disturbed weather south of the Gulf of Tehuantepec became a tropical depression on August 22 and a storm the next day.

Kay lasted for 14.5 days, enough to make it the fifth-longest-lasting Pacific hurricane at the time.

[2] An area of disturbed weather southeast of Socorro Island became a tropical storm on October 28.

However, an area of high wind shear and cool waters destroyed the cyclone on October 29, before it could reach the coast.

Carmen recurved northeast and crossed the Date Line again, entering the central Pacific on April 7.

The JTWC subsequently relinquished responsibility to the Central Pacific Hurricane Center.

Carmen lost its initial motion and stalled in the area, ultimately weakening into a tropical depression on April 8.

[4] Carmen caused no deaths or damage in the Central Pacific Hurricane Center's area of responsibility.

[11] Most of these names were used for the first time, except for Agatha, Estelle, Georgette, and Madeline, which were previously used in the old four-year lists.