Matsa intensified as it tracked northwestward, and attained peak 10-minute sustained winds of 150 km/h (93 mph) near Taiwan before weakening and striking the Chinese province of Zhejiang on August 5.
The system continued northward into the Yellow Sea, and on August 7 Matsa became extratropical after again moving ashore along the Liaodong Peninsula.
[1] In Taiwan, Matsa dropped torrential rainfall of up to 1,270 mm (50 in), which caused mudslides and moderate damage across the island.
As in Taiwan, the typhoon dropped heavy precipitation in the People's Republic of China, and in combination with strong winds destroyed about 59,000 houses and damaged more than 20,000 km2 (7,700 sq mi) of croplands.
The origin of Typhoon Matsa is traced to the formation of an area of convection about 185 km (115 mi) east of Yap in late July.
The convection gradually consolidated over a weak low-level circulation, and at 0300 UTC on July 30 the system was first mentioned in the Joint Typhoon Warning Center (JTWC) Significant Tropical Weather Outlook.
Outflow and deep convection to the north remained limited, though the storm was able to intensity further to attain typhoon status on August 2 about 780 km (480 mi) south of Okinawa.
Intensification slowed, and late on August 3 Matsa reached a peak intensity of 150 km/h (93 mph) while located 495 km (308 mi) east of the southern tip of Taiwan as reported by the JMA; the JTWC and the National Meteorological Center of China reported the typhoon as strengthening further to attain peak winds of 165 km/h (103 mph) on August 4.
Shortly after passing over the Japanese island of Ishigaki, Matsa began to weaken steadily as it approached the coast of China, and made landfall as a minimal typhoon late on August 5 near Yuhuan in the southern region of Zhejiang Province.
Additionally, the typhoon caused the cancellation or delay of several flights in and out of Taipei,[4] though complete air service was restored by the day after Matsa's passage.
The typhoon also resulted in the cancellation or delay of thousands of flights,[1] with the two main airports in Shanghai closed for 30 hours.
[7] Officials near Matsa's projected landfall were advised to lower the levels in reservoirs to mitigate the threat of flooding.
[9] Due to the potential for rough seas, officials closed the port at Ningbo and Shanghai and also canceled some ferry service.
[10] About two-thirds of the province reported more than 50 mm (2.0 in) of rainfall,[17] resulting in flooding in low-lying areas[8] as well as several mudslides,[10] one of which killed two people.
[18] The combined effects of the winds and rains destroyed 21 reservoirs and more than 200 km (120 mi) of embankment, and damaged several water stations.
[1] Typhoon Matsa affected the southernmost Okinawa Prefecture, and produced peak wind gusts of 182 km/h (51 m/s; 113 mph) on Ishigaki.
In reaction, a member of the Council of Agriculture remarked that "vegetable prices [were] expected to go back to normal gradually ... as supplies increase[d].
[27] Shortly after the effects of the typhoon ended on the island, work began to repair and rebuild the impacted bridges and roads.