It has no official bounds; it ran year-round in 1973, but most tropical cyclones tend to form in the northwestern Pacific Ocean between June and December.

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

Tropical Storm Billie, which developed on July 12 east of the Philippines, rapidly strengthened on the 14th and 15th to a 150 mph super typhoon.

Typhoon Dot struck Hong Kong causing sustained storm force winds, killing one person.

This contributed to the above-average monthly precipitation for July 1973 in southern Shikoku and eastern Kyushu, when the rest of Japan was suffering from droughts.

Under weak steering currents, it meandered westward, where favorable conditions allowed for it to strengthen, first to a tropical storm on the 2nd, then to a typhoon on the 3rd.

One of the strongest tropical cyclones to hit Visayas when it entered on November 20, although the system didn't reach typhoon status.

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

This table will list all the storms that developed in the northwestern Pacific Ocean west of the International Date Line and north of the equator during 1973.

Classification and intensity values will be based on estimations conducted by the JMA, however due to lack of information around this time sustained winds were recorded by the JTWC.