Co-may upgraded once more to a tropical storm, but is putting Okinawa in its rear-view mirror, headed west toward China’s east coast. (Joint Typhoon Warning Center)

7:20 a.m. Tuesday, July 29, Japan time: Co-may has once more been upgraded to a tropical storm by Joint Typhoon Warning Center. But it’s putting Okinawa in its rear-view mirror, headed west toward China’s east coast.

At 3 a.m., Co-may was about 175 miles west-northwest of Kadena Air Base, steaming west at 16 mph with 40-mph sustained winds and 52-mph gusts at center. U.S. bases on Okinawa remained in seasonal Tropical Cyclone Condition of Readiness 4 overnight Monday.

JTWC forecasts Co-may to make landfall as a tropical storm about 55 miles south of Shanghai late Wednesday evening. Okinawa can expect light to moderate showers over the next two days, with gusty winds subsiding as Tuesday wears on.