These dates conventionally delimit the time of year when most tropical cyclones form in northeast Pacific Ocean.

This season is unusual in that no one was killed, no damage was inflicted, and no tropical cyclones made landfall.

Based on data from six ships, a closed atmospheric circulation may have formed near the Revillagigedo Islands at 0000 UTC on August 23, which are situated roughly 350 mi (565 km) south of the Baja California Peninsula.

[6] The remnants of Tropical Storm One brought heavy rains to Arizona at the very end of the month.

Initially, evidence of closed wind circulation was insufficient to warrant an upgrade into a tropical disturbance.

[3] A tropical storm formed on September 9;[6] meanwhile, ship reports indicated a pressure of 1,001 mbar (29.6 inHg) and sustained winds of 50 mph (85 km/h).

[3] Maintaining peak intensity for a day, the low moved northwest before dissipating on September 10 as[6] barometric pressures began to rise.

[3] A tropical cyclone first formed on September 13 near Western Mexico (in the extreme southern Gulf of California) while generating winds of 30–40 mph (50–65 km/h).

It traveled north-northeastward[3] and Three was upgraded into a hurricane on September 14 while reaching its maximum sustained wind speed of 85 mph (135 km/h).

[3] On October 1, a closed low formed in the Gulf of Tehuantepec from an area of disturbed weather, which had persisted for several days prior.