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 forming in the entire west Pacific basin were assigned a name by the Fleet Weather Center on Guam.

Typhoon Sarah formed at a low latitude on March 21 and took a generally northwest heading.

Low wind shear and warm waters allowed Wanda to intensify steadily, developing into an intense typhoon.

On July 30, reconnaissance aircraft recorded a minimum pressure of 902 mbar (26.6 inHg), and the peak winds were estimated at 295 km/h (183 mph).

After passing through the Miyako Islands, Wanda weakened slightly and traversed the East China Sea.

Along the coast of Zhejiang, Wanda produced a 5.02 m (16.5 ft) storm surge that destroyed 465 seawalls and 902 boats.

Emma was a powerful typhoon that brought 145 mph (233 km/h) winds and 22 inches (560 mm) of rain to Okinawa (then the US territory of the Ryukyu Islands) and South Korea.

Forming from a tropical disturbance near the Mariana Islands, Emma churned southwest before gaining typhoon status on September 3.

On Kyushu, Emma brought 22 inches of rain that caused extensive flooding with left 34 people dead and thousands homeless.

On Okinawa, most headed typhoon watches are choosing to evacuate or bolting storm shutters and stowing avay light equipment.

When Emma hit Okinawa, it brought 145 mph (233 km/h) gusts that ripped apart runways and smashed hangars.

A total of 1,059 millimetres (41.7 inches) fell at Kadena Air Force Base in 21 hours on September 8.