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 Fleet Weather Center on Guam.

The next day, Olive strengthened into a Category 5-equivalent cyclone on the modern-day Saffir–Simpson hurricane wind scale.

Olive produced significant damage on Wake Island, where wind gusts reached 142 mph (229 km/h).

Typhoon Olive remains one of the most intense tropical cyclones to affect the island.Shirley tracked through Vietnam.