Typhoon Mitag moved nearer to northeastern Taiwan on Sunday night. At 11:00 p.m. EDT on Sunday the center of Typhoon Mitag was located near latitude 22.3°N and longitude 122.7°E which put it about 180 miles (290 km) south-southeast of Taipei, Taiwan. Mitag was moving toward the northwest at 14 m.p.h. (22 km/h). The maximum sustained wind speed was 75 m.p.h. (120 km/h) and there were wind gusts to 90 m.p.h. (145 km/h). The minimum surface pressure was 976 mb.
Former Tropical Storm Mitag strengthened into a typhoon on Sunday. A circular eye appeared at the center of Typhoon Mitag on satellite images. The eye was surrounded by a ring of thunderstorms. There were some breaks in the ring of storms, but the strongest winds were occurring in the ring. Bands of showers and thunderstorms were revolving around the core of Typhoon Mitag. Storms near the core were generating upper level divergence which was pumping mass away in all directions. Winds to typhoon force extended out 50 miles (80 km) from the center of circulation. Winds to tropical storm force extended out about 185 miles (295 km) from the center.
Typhoon Mitag will move through an environment favorable for intensification during the next 12 to 24 hours. Mitag will move over water where the Sea Surface Temperature is near 28°C. It will move through a region where the upper level winds are not too strong and there will not be a lot of vertical wind shear. Typhoon Mitag could strengthen on Monday if the center of circulation does not pass over northeastern Taiwan. If the center of Mitag does move over Taiwan, then the typhoon will weaken,
Typhoon Mitag will move around the western end of a ridge of high pressure over the Western North Pacific Ocean. The ridge will steer Mitag toward the north-northwest. On its anticipated track the center of Typhoon Mitag will be near northeastern Taiwan within 12 hours. Mitag could drop heavy rain over parts of Taiwan and flash floods are possible. Rainbands in the eastern side of the typhoon will bring gusty winds and heavy rain to the southern Ryukyu Islands. Typhoon Mitag could approach the east coast of China near Taizhou in about 36 hours.
Tropical Storm Yagi made landfall on the east coast of China between Wenzhou and Taizhou on Sunday. At 11:00 a.m. EDT on Sunday the center of Tropical Storm Yagi was located at latitude 28.4°N and longitude 121.7°E which put it about 35 miles (55 km) south of Taizhou, China. Yagi was moving toward the northwest at 16 m.p.h. (26 km/h). The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h). The minimum surface pressure was 987 mb.
Tropical Storm Yagi was moving steadily inland over Zhejiang province between Wenzhou and Taizhou. The strongest winds were occurring in bands of thunderstorms east of the center of circulation that were over the coastal waters of the East China Sea. The wind in those areas will diminish when Yagi moves farther inland. The greatest risk will be locally heavy rain falling over parts of Zhejiang province. Rainfall could be enhanced where the wind blows up the slopes of mountains and steep terrain increases the potential for flash floods.
Elsewhere over the Western North Pacific Ocean, Tropical Storm Leepi moved closer to Iwo To and Tropical Depression 20W formed southwest of Hong Kong. At 11:00 a.m. EDT on Sunday the center of Tropical Storm Leepi was located at latitude 24.1°N and longitude 141.2°E which put it about 85 miles (135 km) south-southeast of Iwo To. Leepi was moving toward the north-northwest at 11 m.p.h. (17 km/h). The maximum sustained wind speed was 55 m.p.h. (90 km/h) and there were wind gusts to 70 m.p.h. (110 km/h). The minimum surface pressure was 992 mb.
At 11:00 a.m. EDT on Sunday the center of Tropical Depression 20W was located at latitude 20.7°N and longitude 112.4°E which put it about 85 miles (135 km) southwest of Macao. It was moving toward the east-southeast at 3 m.p.h. (5 km/h). The maximum sustained wind speed was 35 m.p.h. (55 km/h) and there were wind gusts to 45 m.p.h. (75 km/h). The minimum surface pressure was 996 mb.