The current development on storm identification, tracking and forecast ing based on weather radar data are reviewed. Storm identification , tracking and forecasting, as the earliest nowcasting techniques, are the basic and essential parts of radar and severe weather warning operations. At present, they include three aspects: cross correlation algorithm, cell centroid cracking algorithm, persistence prediction method, which are called as extrapolation. Among t hem, Persistence prediction method has been replaced by the former two methods. Firstly, the history and main algorithms of cross correlation and cell centroid method are presented in detail. Secondly, a few new methods based on the extrapo lation are described. Finally, in combination with FDP project during Sydney Oly mpic Games, test and evaluation on nowcasting technique are also discussed.