Eight forecast factors of convective initiation(CI) are calculated by using IR1,IR2 and WV TBB of MTSAT-1R satellite data based on target clouds identification.The critical values of forecast factors are proposed in Beijing-Tianjin region,and the 17 days test of convective initiation forecast in Beijing-Tianjin region during 2006 and 2007 is carried out.Results of the test show that this method of CI forecast can well forecast the CI occurs in the next one hour.The method of CI forecast results evaluation i...