Furthermore, one boy was killed on Koror, where numerous homes lost their roofs and communication lines were downed.

It then began to deepen at a faster rate, with Percy attaining its maximum intensity of 145 km/h (90 mph) on June 25.

Two days later, on June 27, increased wind shear began to induce a weakening trend and the typhoon brushed Luzon, where eight people were killed and over 30,000 lost their homes.

After tracking through the South China Sea, Percy made landfall southwest of Xiamen on June 29, and on the next day, dissipated inland.

Satellite imagery showed signs of a well-defined low-level circulation and the disturbance was situated in a weakly divergent environment aloft along with persistent convection.

[1] On the same day, the Japan Meteorological Agency (JMA) upgraded the system into a tropical depression.

Following a ship report of 65 km/h (40 mph) winds,[1] both the JTWC and JMA upgraded the system into Tropical Storm Percy.

[2] After moving away from the Caroline Islands, the typhoon began to intensify at a faster clip as an outflow channel to its north opened,[1] even though the eye was initially ragged.

[1] Meanwhile, the JMA reported that Percy attained its maximum intensity of 145 km/h (90 mph) and a minimum barometric pressure of 960 mbar (28.3 inHg).

[6] Overland, the storm weakened slightly, but remained a typhoon upon entering the South China Sea.

There, widespread flooding was reported due to storm surge, with most roads on the island requiring closure[1] and 30 homes being damaged.

The typhoon passed 230 km (145 mi) north of Koror,[1] where a boy perished when he was swept by rain into mangrove trees near his home.

The Philippine Red Cross indicated that a baby girl drowned and two other individuals were listed as missing in floods in the Ilocos Region.

[12] The typhoon posed enough of a threat to Hong Kong to warrant a No 1. hurricane signal briefly, but it was dropped within 24 hours.

Nevertheless, a pressure of 999.4 mbar (29.51 inHg) was measured at the Hong Kong Royal Observatory early on June 29.

[13] The remnants of Percy would interact with a frontal low and stagnate along the Korea Strait, causing heavy rainfall in Japan on July 2.

This flooding event caused fifteen buildings to be partially destroyed, over 250 roads to be damaged in some way, seventeen levee collapses, four bridges to be washed away, five injuries, and two deaths in the prefecture.

In total, in Saga Prefecture, Percy's remnants caused 57.976 billion yen (USD$397.65 million) in damage.