The numbers of gust fronts are the most in July and August, which occupy about 63.8%, while June ranks second. May and September are the least. The gust fronts often appear in the afternoon to the night, whose intensities are between 10-20dBz and lives last for about 1 to 2 hours. There are 249 cases triggered convection in 388 processes, which occupied 64%.
In this paper, sounding data and automatic station data are used to analyze 8 processes, in which gust fronts triggered convective storms. The results show that, (1) if there are two or more gust fronts get crossed, or gust fronts cross with other boundary layer convergence lines, it would trigger convective storms easily. (2) If the gust fronts pass the instability area, the convective storms would be triggered easily. (3) The thunderstorm would develop if the gust fronts with them.