These dates conventionally delimit the time of year when most tropical cyclones form in northeast Pacific Ocean tropical cyclone basin, between the International Date Line and the west coast of North America.
Before the dawn of the satellite era in the 1960s, data on Pacific hurricanes is extremely unreliable.
Three known tropical cyclones formed this year in the eastern Pacific proper.
It passed close to the southern tip of the Baja California Peninsula but never made landfall.
After crossing central Baja California, a tropical cyclone moved northward into southwestern Arizona on August 20, causing up to 2 inches (51 mm) of rain.
The remnants of this tropical cyclone moved northeastward through Baja California and Arizona, producing up to 4 inches (100 mm) of rain in the desert region.
The first developed on October 5 near Hawaii, and moved northward until being absorbed by an extratropical storm over the Aleutian Islands.
One of them was an extremely unusual hurricane that formed between February 6 and 18 and hassled a ship moving between San Pedro and Panama City.
The initial low pressure area formed on August 20 well southwest of Hawaii.
It strengthened into Atlantic hurricane 6 and eventually made landfall in Louisiana as a weak Category 2.
It dissipated on September 9 after making landfall about midway between Acapulco and a place called "C. Corrigules".