These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.

The scope of this article is limited to the Pacific Ocean, north of the equator and west of the International Date Line.

Tropical Storms formed in the entire west pacific basin were assigned a name by the Joint Typhoon Warning Center.

It tracked west-northwestward, quickly strengthening to a tropical storm that day and a typhoon on the 13th.

Dinah continued to quickly intensify as it turned to the northwest, and attained a peak of 185 mph on the 17th to the northeast of Luzon.

It hit southern Taiwan on the 18th as a 140 mph typhoon, and weakened greatly over the island to a tropical storm.

160 mph Super Typhoon Freda, which began its life on July 6, hit northern Luzon on the 13th.

Freda dissipated the next day over China, after causing heavy flooding killing an unknown number of people.

The typhoon brought strong winds and heavy rain before dissipating over China on the 20th.

The storm formed on September 27 northeast of Palau and dissipated on October 6 north of Japan.

The Philippine Atmospheric, Geophysical and Astronomical Services Administration uses its own naming scheme for tropical cyclones in their area of responsibility.