Analysis of Dynamic Condition Diagnosis of One Rare Regional Rainstorm

[Objective] The aim was to discuss dynamic conditions for one rare regional rainstorm.[Method] By using conventional material,ground encryption automatic standing material,wind profiling radar data and Doppler radar data,strong precipitation and regional large rainstorm in Lingxi area on August 3,2010,was expounded principal of heavy weather analysis.[Result] The precipitation process was the result of different scale and different height systems influenced by the southwest airflow in the edge of subtropical high,weak mid-latitude trough before high-level south from the small cold air permeability and senior(10km above);the instability of atmosphere structure was the premise of strong precipitation.Ground convergent,east storm with senior northwestern current interaction triggered unstable energy released;the southwest airstream in the edge of subtropical high provided water vapor supply.The duration of the precipitation was short and the intensity was large.Precipitation moved to certain direction,having typical mesoscale strong convection system.Strong precipitation fell in the same place as the convergence area of wind field.The place having next strong precipitation can be predicted based on the wind field convergence position along with the movement of time.Outline radar data and Doppler radar data contour line products can more accurately represent atmospheric vertical wind field structure.[Conclusion] The study provided certain references for the report of rainstorm.