Analysis on a Local Rainstorm Process

A local heavy rainstorm from southern Yingkou to northern Dalian on July 13th,2010 is analyzed by using conventional data such as MICAPS,Doppler weather radar,satellite cloud picture,automatic weather station and NCEP 6-hour re-analysis data,in terms of analysis of atmospheric circulation and diagnosis.The results showed that this rainstorm is a common weather type which leads to heavy rain here in summer: the high altitude cold air is strengthening,the shear line of low level is stable and the surface cold front passes by,such fit of warm and cold air on low and high level results in rainfall easily.