Comparative Analysis for the Two Cases on Typical Rainstorm in Western Guizhou

By using of objective analysis ECWMF data,conventional observation,the automatic weather station data and physical quantity,the rainstorm at night on mid to late June 2011 in Western Guizhou Province is analyzed.The results clearly show:①The two rainstorms had trough(or southern trough),southwest vortex,shear line,jet and deep water vapor and other weather conditions is effective and rational allocation of weather conditions.The two rainstorm of occurred,there is strong vertical motion,the abundant energy and water vapor over conditions on Western Guizhou,these conditions for the rainstorm provides a sufficient condition.②The regional data shows,automatic stood on the small and medium-scale weather system of precipitation rain formation and strengthen played an important role,and for the short-term forecast has instructions near.③WRF model simulate precipitation rain formation,intensity and 700 hPa southwest vortex moving along the shear line trend,similar to the rainstorm short-time forecast has important significance.