In the southern Ryukyu Islands and Kyushu, high wind overturned vehicles, damaged buildings, and left over 490,000 homes without power.

In the middle of August 2015, a strong westerly wind burst along the equator produced two areas of convection, or thunderstorm activity, near the Marshall Islands in the western Pacific Ocean.

With low wind shear and favorable sea surface temperatures, tropical cyclone forecast models anticipated further development of both convective systems.

[2] At 18:00 UTC that day, the Japan Meteorological Agency (JMA) classified it as a tropical depression, centered about 700 km (430 mi) east-southeast of Guam.

[3] Early on August 14, the Joint Typhoon Warning Center (JTWC) initiated advisories on the system with the designation Tropical Depression 16W.

[4] Favorable outflow to the south counteracted moderate wind shear, though a tropical upper tropospheric trough to the northeast disrupted the thunderstorm structure.

[10][11] While the typhoon was moving westward toward the Philippine island of Luzon, thunderstorms in the northern eyewall deteriorated as a result of unfavorable subsidence from a high pressure system to the north.

[11][12] Early on August 18, the Philippine warning center PAGASA began national advisories on the typhoon, giving Goni the local name Ineng.

[3] Goni maintained much of its strength while traversing the East China Sea, as low wind shear allowed convection to persist around the eyewall.

[8] PAGASA – the Philippine Atmospheric, Geophysical and Astronomical Services Administration – started issuing advisories on Goni when the storm entered the agency's area of responsibility on August 18.

The National Disaster Risk Reduction and Management Council (NDRRMC) was placed on red alert in preparation for the typhoon, meaning that the agency would issue 24-hour public weather forecasts and general flood advisories.

The Department of Social Welfare and Development (DSWD) pre-stocked funds, food packs, and other emergency items to be utilized in the aftermath of the typhoon.

[27] While stalling north of Luzon, Goni enhanced the southwest monsoon across the Philippines, resulting in rainfall and gusty winds across the western portion of the nation.

Across Luzon, flooding caused landslides in 13 locations,[27] including a mountain slope in Mankayan, Benguet, that buried three mining camps, killing 13 miners.

Across Luzon, trees were knocked down and the power supply was disrupted; all electrical service was restored by September 1, or 11 days after the storm's closest approach.

In response, the Philippine Department of Social Welfare and Development (DSWD), in conjunction with local governments, provided ₱15.5 million (US$332,000) toward relief funds.

Various agencies, including the NDRM and the Philippine Red Cross, distributed water, meals, medicine, and blankets to affected families.

[22] The Korea Meteorological Administration warned for the potential of heavy rainfall for the provinces of Jeju, Gangwon, and North and South Gyeongsang.

[36] Rainfall was heaviest along the east coast of South Korea, peaking at 327 mm (12.9 in) in Gangwon Province and helping to ease drought conditions there.

[44] With the 70th annual Foundation Day of the Workers' Party of Korea looming, Supreme Leader Kim Jong-un ordered troops to promptly repair the flood damage by building 1,800 new apartment houses and restoring 4,000 impacted homes.

[30][42][43] The Red Cross Society of the Democratic People's Republic of Korea provided tarps, water purification tablets, and other emergency supplies to affected residents.

[43] To prepare for the storm in the Russian Far East, local officials advised people living along rivers and the coastline to seek shelter and to remove livestock from low-lying areas.

[48] The zoo in Ussuriysk was flooded with waters 1.5 m (4.9 ft) deep after the nearby Rakovka River overflowed its banks; the animals had to be evacuated after their cages were submerged,[49] and one bear drowned.

[50] With 88,300 hectares (218,000 acres) of crops damaged or destroyed, Goni took a heavy toll on the agriculture industry, with losses estimated at ₽2.4 billion (US$35 million).

[51] A 66-year-old man drowned amid high waves after falling from a fishing boat off Miyazaki Prefecture, on the southern island of Kyushu.

[30] The typhoon brought flooding rainfall to Japan from Okinawa northeastward to the Kantō region, with a 24-hour total of 533 mm (21.0 in) recorded in Owase on Shikoku.