[nb 1] It later weakened due to increasing wind shear and drier air, and after recurving to the northeast, Lupit became extratropical south of Japan on December 2.

Typhoon Lupit first affected Pohnpei with tropical storm-force winds, and later it damaged or destroyed about 200 homes in Chuuk State.

The origins of Typhoon Lupit were from a tropical disturbance that persisted in the monsoon trough on November 14 to the northeast of Kwajalein Atoll.

[1] At around 1200 UTC on November 18, the Japan Meteorological Agency (JMA)[nb 3] classified the system as a tropical depression to the west of the Marshall Islands.

[1] Late on November 19, the JTWC issued its first advisory on Tropical Depression 26W when the system was about 465 km (289 mi) east-northeast of Pohnpei.

Late on November 20, the JTWC upgraded the depression to a tropical storm following an increase in deep convection, although the thunderstorms were located south of the center.

[3] Based on the development of a 30 km (19 mi) eye, the JTWC upgraded Lupit to a typhoon that day,[1] and the JMA followed suit on November 23 when the storm was near the Caroline Islands.

[3] On November 27, the Philippine Atmospheric, Geophysical and Astronomical Services Administration classified the system as Super Typhoon "Yoyoy" after the storm entered the agency's area of warning responsibility.

After peaking in intensity, Lupit underwent an eyewall replacement cycle, which caused the outflow to decrease and convection around the eye to diminish.

[1] Lupit entered a weakness in the subtropical ridge, resulting in a turn to the north and later northeast into an area of cooler waters and drier air.

About 200 houses were damaged or destroyed, and many homes affected by the typhoon had unsanitary conditions, a contaminated water supply, or lack of food.

[8] High winds downed banana and palm trees, and salt water damaged or wrecked all of the food crops in Chuuk.

On both islands, Lupit produced waves of 4.2 to 5.5 m (14 to 18 ft), causing severe beach erosion, and sea spray and flooding contaminated water supplies.

Lupit affected other islands in Yap State with coastal flooding of around 1 m (3.3 ft), severe beach erosion, and wrecked crops.

[8] The government sent water to affected areas via a private airline, although damaged runways prevented 60% of flights from being delivered.

[11] As part of Operation Christmas Drop, Japanese and American Air Force units sent four planes to various islands with various supplies and gifts, including to areas affected by the typhoon.