While approaching southeastern China, Wanda reached its peak strength of 175 km/h (110 mph) in 1-minute winds, with the JTWC estimating a minimum pressure of 949 mbar. The typhoon weakened slightly before making landfall on Hong Kong at 0000 UTC on September 1, with winds of 150 km/h (90 mph). A combination of cold air and land interaction caused Wanda to weaken rapidly, and the JTWC discontinued advisories about 18 hours after Wanda moved ashore. According to the JMA track, the system turned southwest into the Gulf of Tonkin, intensifying slightly before shifting southeastward and dissipating over Hainan on September 4.