On August 23, the Joint Typhoon Warning Center (JTWC) started to monitor a tropical disturbance that had developed about 895 km (556 mi) to the north of the island of Palau.

[3] Six hours after the TCFA, the JMA began issuing advisories on the depression after they have determined that the system contained winds of 55 km/h (34 mph).

[7] After it was depicted by satellite imagery that there was deep convection obscuring its low-level circulation center (LLCC), the JTWC had upgraded the system to a tropical storm.

[9] Pakhar slightly intensified after a burst of deep convection developed just prior of making landfall over in Luzon in the province of Aurora.

[12] After emerging to the South China Sea on August 26, Pakhar began to re-intensify as the storm entered in an area of a much lower amount of wind shear.

[14] By 18:00 UTC of the same day, the JMA upgraded Pakhar's intensity as a severe tropical storm,[15] despite its central convection remaining disorganized.

[17] By 00:00 UTC of August 27, Pakhar reached its maximum intensity of 100 km/h (62 mph) with a minimum barometric pressure of 985 hPa while making landfall over in South China in the city of Taishan.

As soon as PAGASA began issuing advisories on the storm, Tropical Cyclone Warning Signal #1 was raised over most of Cagayan Valley and northern Aurora during August 24.

[27]: 3 The Office of the Civil Defense warned residents of low-lying areas in the provinces of Cagayan and Isabela of potential flooding.

[30] A total of 11 flights to Hong Kong and South China from Ninoy Aquino International Airport were canceled due to the storm.

[32] Still recovering from the aftermath of Typhoon Hato which impacted the area four days earlier, the Macao Meteorological and Geophysical Bureau issued a Tropical Cyclone Signal No.

[38] Two people were stranded in Kowloon Peak and moreover, the Government Flying Service deployed a Challenger 604 fixed-wing plane to locate 11 crew members waiting in the control room of a sinking Hong Tai 176 vessel.

The Home Affairs Department of Hong Kong opened 27 temporary shelters while the China Ferry Terminal in Tsim Sha Tsui was closed temporarily.

[48] The remnants of Pakhar caused heavy rainfall in Bắc Kạn Province, Vietnam, leaving an estimated 2 billion₫ (US$88,000) in damage.

Due to the torrential rain, a major reservoir in Sakon Nakhon had to be discharged, leading to a flood watch being issued in the northern parts of the country on August 28.