Tropical Storm Khanun was still spinning over the Western North Pacific Ocean south of Japan on Sunday night. At 11:00 p.m. EDT on Sunday the center of Tropical Storm Khanun was located at latitude 27.9°N and longitude 131.1°E which put it about 260 miles (415 km) south of Kagoshima, Japan. Khanun was moving toward the east-southeast at 5 m.p.h. (8 km/h). The maximum sustained wind speed was 65 m.p.h. (105 km/h) and there were wind gusts to 80 m.p.h. (130 km/h). The minimum surface pressure was 976 mb.

Tropical Storm Khanun did not change much on Sunday. There was still a large circular area that was mostly clear at the center of Khanun’s circulation. There were bands of showers and lower clouds within the mostly clear area. A broken ring of thunderstorms with a diameter of 170 miles (280 km) surrounded the mostly clear area. The strongest winds were occurring in the broken ring of storms. Storms in the ring generated upper level divergence that pumped mass away from the tropical storm. There were also bands of showers and thunderstorms outside the broken ring. Winds to tropical storm force extended out 235 miles (380 km) from the center of Tropical Storm Khanun.

Tropical Storm Khanun will move through an environment that will be somewhat favorable for intensification during the next 24 hours. Khanun will move over water where the Sea Surface Temperatures are near 28˚C. It will move through a region where the upper level winds are weak and there will be little vertical wind shear. However, Tropical Storm Khanun may not intensify during the next 24 hours, because of the lack of thunderstorms in the inner core of its circulation. The large circulation around Tropical Storm Khanun could remain in an equilibrium with its environment and the intensity may not change much during the next 24 hours..

Tropical Storm Khanun will move around the western part of a high pressure system over the Western North Pacific Ocean. The high pressure system will steer Khanun slowly toward the north during the next 24 hours. On its anticipated track, Tropical Storm Khanun will start to move toward Kyushu. The center of Khanun’s circulation could be near southern Kyushu in less than 36 hours. Tropical Storm Khanun will continue to produce strong, gusty winds and locally heavy rain in the northern Ryukyu Islands. Prolonged heavy rain will cause flash floods in some locations. Bands in the northern side of Khanun could bring gusty winds and heavy rain to parts of Kyushu on Monday.