FUZZY PROBABILITY PREDICTION METHOD FOR TROPICAL CYCLONE TRACK

Based on forecasting criteria of tropical cyclone categories of left and right turning and stable track and fuzzy mathematical principles, a fuzzy probability prediction method is formulated for track changes. It is 48-h valid for forecasting sudden change or stable track as well as giving fuzzy probability of trajectory, for the use in decision-making. As shown in operational experiments, if is easy to operate, simple to illustrate, objective to quantify.definite to conclude. and satisfactory to actualize. It is dependable with high level of reference, especially when the fuzzy probability is greater than 70%. for errors in direction and 48-h mean distance errors are all lower than those at major forecasting centers at home or abroad.