According to the JMA, typhoon Khanun was moving across the sea south of Japan and headed north-northwest at 15 km per hour on Monday, reports Xinhua news agency. The storm had a central atmospheric pressure of 960 hectopascals, with winds of up to 144 km per hour near its center and gusts of up to 198 km per hour, said the JMA. Typhoon Khanun Update: Tropical Storm Heads Toward Japan’s Okinawa and Amami.