Abstract: The method in this P.C.modle is the same in principle as those used in general P.C.modles with distinguishing feature in that:for every initial position and initial displacement vector a climatological track is provided from-which displacement vector of the following 6h,12h etc,may be obtained as climatological factors for later screening.we made 187 operational forecasts for 14 typhoon cases in 1983 and obtained rather good results in forecasting tracks.