October 15, 2015: It is likely to be hit Luzon on Saturday afternoon with 180-220 km/h winds according latest JTWC forecast
October 15, 2015: GFS rain forecast for Koppu.
October 15, 2015: Track forecast by weather.com
October 15, 2015: Latest satellite image of tropical storm KOPPU. It will intensify into violent typhoon in next 48 hours.