Abstract: The experiments of an objective technique for estimating the location of a tropical cyclone from a variety of satellite and radar fix reports are described. The western North Pacific climatology and persistence (WPCLPR) track forecast technique is used to get a potential track from each fix. A tentative warning position is interpolated from a smooth curve that is fit to the future and past positions. When multiple fixes are available, the expected accuracy and the timeliness of each fix could be obtained using the weighing polynomia. The technique was tested by the independent data of 1988. The results demonstrate that this technique is a useful tool for the forecasters to determine the present location of the tropical cyclone