Early on September 12, the National Weather Service Weather Forecast Office in Guam, using data from the JTWC, placed Tinian and Saipan under a Typhoon Watch whilst declaring a Tropical Storm Watch also declared for Guam and Rota [REF].
Early on September 16 the JMA started to issue Typhoon force wind warnings, for the Naha, Okinawa; however these were discontinued later that day [REF].