Based on the data of satellite cloud image and Doppler radar,the rainstorm process from July 31st,2007 to August 1st,2007 in Liaoning was analyzed.The precipitation in Fushun and Haicheng was more than 100 mm,and 6 h precipitation in Fushun and Dandong was more than 50 mm.Through the analysis of strong precipitation period,the structure of clouds had a little decline from the stage of development to maturity.The gray value and gradient degree around were both larger in the center of heavy precipitation.
In this paper,the analysis of two short periods of strong convection weather occurring in the northern part of Liaoning on August 8,2007 and July 16,2008 is made,which verifies that the two processes are typical severe convective weather processes of cold vortex.They agree on location of occurrence,weather background and the characteristics of radar data.
