U.S. Navy Downgrades Ma-on as Storm Bears Down on Southern Japan

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Typhoon Ma-on weakened to a tropical storm as it moved on a course that will take it over central Japan today, passing south of Tokyo before heading out to sea, the U.S. Navy Joint Typhoon Warning Center said.

The storm was about about 550 kilometers (340 miles) southwest of Tokyo at 12:50 a.m. local time today, the Japan Meteorological Agency said on its website. Ma-on was moving north-northeast at 10 kilometers per hour with winds blowing at 139 kilometers per hour, the agency said.