Tropical Storm Akoni developed southeast of Hawaii on Thursday. At 7:00 p.m. EDT on Thursday the center of Tropical Storm Akoni was located at latitude 12.2°N and longitude 144.8°W which put it about 855 miles (1380 km) southeast of Hilo, Hawaii. Akoni was moving toward the west at 7 m.p.h. (11 km/h). The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h). The minimum surface pressure was 1003 mb.
More thunderstorms developed near an area of low pressure southeast of Hawaii on Thursday and the Central Pacific Hurricane Center designated it as Tropical Storm Akoni when satellites indicated there were winds to tropical storm force. The circulation around Tropical Storm Akoni was still organizing. Bands of showers and thunderstorms were forming. The strongest rainbands were in the southern half of the circulation. Bands in the northern half of the circulation were not as strong. Winds to tropical storm force extended out about 70 miles (110 km) from the center of circulation.
Tropical Storm Akoni will move through an environment favorable for intensification during the next several days. Akoni will move over water where the Sea Surface Temperature is near 28°C. It will move southeast of an upper level trough northeast of Hawaii. The trough will produce southwesterly winds which will cause some vertical wind shear, but the shear will not be strong enough to prevent intensification. Tropical Storm Akoni is forecast to strengthen gradually during the next several days.
Tropical Storm Akoni will move south of a subtropical high pressure system over the eastern and central Pacific Ocean. The high will steer Akoni toward the west-northwest. On its anticipated track Tropical Storm Akoni will be south of Hawaii on Sunday.
Elsewhere, Hurricane Juliette was weakening slowly southwest of Baja California. At 5:00 p.m. EDT on Thursday the center of Hurricane Juliette was located at latitude 21.3°N and 120.8°W which put it about 870 miles (1380 km) west-southwest of the southern tip of Baja California. Juliette was moving toward the northwest at 12 m.p.h. (19 km/h). The maximum sustained wind speed was 85 m.p.h. (135 km/h) and there were wind gusts to 100 m.p.h. (160 km/h). The minimum surface pressure was 980 mb.