[citation needed] Early on August 30, the JTWC reported that Kompasu had developed an eye feature and had intensified into a typhoon.

[citation needed] The Japan Meteorological Agency's Regional Specialized Meteorological Center in Tokyo, Japan uses the Typhoon Committees Tropical Cyclone Intensity Scale which is based on 10-minute sustained winds for its tropical cyclone tracking information, while the Joint Typhoon Warning Center uses 1-minute sustained winds.

[1] On August 28, the United States Kadena Air Base in Okinawa began preparing for what was then Tropical Storm 08W.

[8] By August 30, forecasts showed that a strengthening storm would strike the area, possibly bringing winds in excess of 130 km/h (81 mph).

Military personnel and residents across the island were urged to complete their preparations and remain indoors for the duration of the typhoon.

[13] Throughout Okinawa, Kompasu brought strong winds and heavy rains, leaving an estimated 32,000 residences without power.

According to United States Air Force captain Adam Vaccarezza, concrete towers fell during the storm.

[15] On August 31 at 12:40 CST, the Zhejiang Meteorological Observatory in Zhoushan City, Zhejiang issued an orange typhoon warning signal, and estimated that at midnight on the same day, the wind from the sea along the coast of Zhoushan would gradually intensify to 8–10 grade, and from the morning of September 1, will continue to increase from 10 to 12, and near the sea winds would exceed 12 grade.

[23] Throughout South Korea, high winds and torrential rains cut power to an estimated 1.56 million residences.

[26] In the capital city of Seoul, portions of the subway system were damaged, creating widespread travel issues.

[26] In Incheon, the Munhak Stadium sustained substantial damage as gale-force winds shredded the roof of the structure.

[25][27][32] In the wake of the storm, the Korean disaster agency stated that 29,000 government officials, soldiers and volunteers were working on clearing debris and restoring power.

[34] Although the Government of North Korea withheld information regarding loss of life, a South Korean humanitarian group stated that dozens of people were killed across the country.