Typhoon Mitag was passing just to the east of China on Monday night. At 11:00 p.m. EDT on Monday the center of Typhoon Mitag was located at latitude 27.7°N and longitude 122.2°E which put it about 250 miles (400 km) south-southeast of Shanghai, China. Mitag was moving toward the north-northeast at 14 m.p.h. (22 km/h). The maximum sustained wind speed was 85 m.p.h. (135 km/h) and there were wind gusts to 105 m.p.h. (165 km/h). The minimum surface pressure was 970 mb.
Typhoon Mitag began to weaken later on Monday. An upper level trough over eastern Asia was producing southerly winds which were blowing toward the top of the circulation. Those winds were causing moderate vertical wind shear. The circulation around Mitag was drawing drier air from Asia into the southern and western parts of the typhoon. There was still an eye at the center of Typhoon Mitag. However the ring of strong thunderstorms around the eye weakened. The stronger bands of showers and thunderstorms were in the northern half of the circulation. Bands in the southern half of the circulation consisted primarily of showers and lower clouds. Winds to typhoon force extended out 60 miles (95 km) from the center of circulation. Winds to tropical storm force extended out 215 miles (345 km) from the center.
Typhoon Mitag will likely to continue to weaken during the next several days. The upper level trough will continue to cause moderate vertical wind shear. The circulation around Mitag will also continue to draw drier air from Asia into the typhoon. Typhoon Mitag will continue to weaken slowly and it could weaken to a tropical storm within 24 hours.
The upper level trough will steer Typhoon Mitag toward the north-northeast during the next 12 to 24 hours. Mitag will turn more toward the northeast in a day or so. On its anticipated track Typhoon Mitag will pass to the east of Ningbo and Shanghai. Mitag could approach South Korea in about 36 hours. It will likely be a tropical storm by that time, but Mitag could drop locally heavy rain over South Korea.