Tropical Storm Jongdari made landfall south of Shanghai on Thursday, while Tropical Storm Shanshan formed northeast of Guam. At 11:00 p.m. EDT on Thursday the center of Tropical Storm Jongdari was located at latitude 30.7°N and longitude 121.4°E which put it about 40 miles (65 km) south of Shanghai, China. Jongdari was moving toward the west at 19 m.p.h. (30 km/h). The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h). The minimum surface pressure was 994 mb.
The center of Tropical Storm Jongdari made landfall on the east coast of China near Zhoushan and Ningbo on Thursday. Jongdari retained a distinct low level center of circulation while it made landfall. The tropical storm brought gusty winds to the coast of Zhejiang and Shanghai Shi provinces. Tropical Storm Jongdari dropped locally heavy rain over parts of those provinces and some flooding could occur. The center of Jongdari will move quickly toward Hangzhou and the risk of flooding will continue as the tropical storm moves inland and weakens.
Elsewhere over the Western North Pacific Ocean, Tropical Storm Shanshan formed northeast of Guam. At 11:00 p.m. EDT on Thursday the center of Tropical Storm Shanshan was located at latitude 17.9°N and longitude 150.1°E which put it about 460 miles (740 km) northeast of Guam. Shanshan was moving toward the west-southwest at 7 m.p.h. (11 km/h). The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (65 km/h). The minimum surface pressure was 998 mb.
A distinct low level center of circulation formed in a cluster of thunderstorms east of the Northern Marianas on Thursday and the Japan Meteorological Agency designated the system as Tropical Storm Shanshan. The circulation of Shanshan was still organizing. Several bands of showers and thunderstorms developed southwest of the center of circulation. Bands northeast of the center consisted mostly of showers and lower clouds. Storms near the center of circulation started to generate upper level divergence.
Tropical Storm Shanshan will move through an environment favorable for intensification. Shanshan 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 weak and there will be little vertical wind shear. Tropical Storm Shanshan will intensify and it could strengthen into a typhoon during the weekend.
Tropical Storm Shashan will move around the western end of a subtropical high pressure system. The high will steer Shanshan in a general northwesterly direction during the next 12 to 24 hours. It will turn more toward the north during the weekend. On its anticipated track Tropical Storm Shanshan will move near the Northern Marianas during the next 24 to 36 hours.