Applying the sounding data , encrypted automatic station data and satellite cloud picture data , we diagnosed and an-alyzed the typhoon rainstorm process on August 3rd~4th, 2012 in Liaoning, which was caused by the tropical storm No .10 “Da-wei”.The results indicated that:after landing , the typhoon entered into the mid-latitude westerly circulation zone , the generated rainstorm was composed of the own rainstorm of the typhoon and the rainstorm far from the typhoon ;the ground friction and the west-erly upper-level jet stream consumed the kinetic energy of the typhoon from the ground and high altitude respectively , especially the westerly upper-level jet stream played an important role in changing the structure and property of the typhoon ; the typhoon cut off the sources of heat and moisture supply , and its own heat and moisture dissipated fast .So the typhoon cyclone rainstorm lasted for a short time, and its influential range was small .On the contrary, the heat and moisture of the typhoon transported through the low -level southeast jet stream to the north in the form of waves .The energy frontal zone extending to the north probably moved into the eastern maritime warm and humid environment .The rainstorm far from the typhoon appeared in the high-energy and high-moisture convergence region of the southeast jet stream , its precipitation intensity was stronger than that of the typhoon rainstorm , and its pre-cipitation process lasted for a longer time than that of the typhoon rainstorm .Both the own rainstorm and the remote rainstorm of the typhoon were mesoscale weather systems , and they occurred in the cyclone and northward-stretched low-level shear line of the ty-phoon .The typhoon rainstorm was produced by the tropical low-pressure vortex cloud system after the typhoon weakened;the remote rainstorm of the typhoon was the short-time strong-convection rainstorm , and it occurred in its northward-stretched low-level shear line.Therefore, the position of low-level shear line was an important basis for determining the remote rainstorm of the typhoon .Be-cause the sounding data had relatively poor timeliness , the time when the ground warm front passed through a place could be used to judge the remote rainstorm of the typhoon , which occurred in the front of the warm front .%应用探空资料、加密自动站、卫星云图资料，对2012年8月3～4日受10号热带风暴“达维”影响的辽宁省台风暴雨过程进行了诊断分析，结果表明：台风登陆后进入中纬度西风环流带，产生的暴雨由台风自身暴雨和台风远距离暴雨组成；台风登陆后进入中纬度西风环流带，地面摩擦和西风带高空急流分别从地面和高空消耗台风动能，尤其是西风带高空急流对改变台风的结构和性质起了重要作用；台风登陆后进入中纬度西风环流带，切断了热量和水汽供应来源，并且自身热量和水汽耗散快，因此台风气旋暴雨持续时间短、影响范围小；相反，台风热量和水汽通过低空东南急流以波的形式向北方输送。向北伸展的能量锋区有向东部海上暖湿环境偏移的可能。台风远距离暴雨出现在东南急流上高能高湿辐合区域，降水强度要强于台风暴雨，降水过程持续时间比台风暴雨长；台风暴雨和台风远距离暴雨都是中尺度天气系统，这两者发生在台风气旋和台风向北伸展的低空切变线上。台风暴雨是由台风减弱后的热带低压涡旋云系产生的暴雨；台风远距离暴雨发生在台风向北伸展的低空切变线上，是强对流短时暴雨，因此，判定低空切变线的位置是确定台风远距离暴雨的重要依据。而由于探空资料时效性较差，可以通过地面暖锋过境的时间来判断，台风远距离暴雨发生在暖锋锋前。
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