Abstract:Using Beijing CINRAD SA Radar reflectivity and radial velocity products about 19 cases of thunderstorm from 2010 to 2014, radar echo characteristics of thunderstorm gales in different life periods in Beijing are analyzed. It is found that 77.8% and 100% thunderstorm gales caused by the belt shaped and bow radar echo can be respectively forcasted and warned early, and 67% of them can be issued early warning in 30 min lead time. No gust front echo was observed in the front of the isolated block echo, the inflow jet was not seen in the radial velocity map, and the radial velocity was not obvious.However, the middle radial convergence, the inflow jet and the gust front observed on the radial velocity map provide important indicative features for the early warning of thunderstorm gale.