Tropical Storm Jangmi brought wind and rain to parts of Japan on Tuesday. At 11:00 a.m. EDT on Tuesday the center of Tropical Storm Jangmi was located at latitude 32.8°N and longitude 134.3°E which put the center about 135 miles (215 km) southwest of Osaka, Japan. Jangmi was moving toward the northeast at 29 m.p.h. (46 km/h). The maximum sustained wind speed was 60 m.p.h. (95 km/h) and there were wind gusts to 80 m.p.h. (130 km/h). The minimum surface pressure was 984 mb.
Tropical Storm Jangmi was bringing wind and rain to parts of Honshu on Tuesday. A weather station at Kansai International Airport in Osaka (RJBB) reported a sustained wind speed of 43 m.p.h. (68 km/h) and a wind gust of 55 m.p.h. (89 km/h).
Tropical Storm Jangmi was making a transition to an extratropical cyclone on Tuesday. The circulation around Jangmi was interacting with a stationary front that was just south of Japan. The interaction with the front was causing the distribution of thunderstorms in Tropical Storm Jangmi to become more asymmetrical. Thunderstorms were occurring in bands in the eastern and northern parts of Jangmi’s circulation. Bands in the western and southern parts of Tropical Storm Jangmi consisted primarily of showers and lower clouds.
The circulation around Tropical Storm Jangmi was still large. Winds to tropical storm force extended out 240 miles (390 km) from the center of Jangmi’s circulation.
Tropical Storm Jangmi will move through an environment that will be unfavorable for intensification of a tropical cyclone during the next 24 hours. Jangmi will move over water where the Sea Surface Temperatures are near 23°C. It will move under the eastern part of an upper level trough that is over South Korea. The upper level trough will produce strong southwesterly winds that will blow toward the top of Jangmi’s circulation. Those winds will cause strong vertical wind shear. The cool Sea Surface Temperature and the strong vertical wind shear will cause Tropical Storm Jangmi to continue to make a transition to an extratropical cyclone during the next 24 hours.
The upper level trough over South Korea will steer Tropical Storm Jangmi toward the east-northeast during the next 24 hours. On its anticipated track, the center of Tropical Storm Jangmi will pass near Tokyo in 18 hours.
Tropical Storm Jangmi will continue to bring strong winds and locally heavy rain to parts of Honshu. Heavy rain could cause flash floods in some locations.