By using routine observational data, radar products, regional automatic weather station and NCEP analysis data, the precipitation characteristics of Meizhou by typhoon"Ewiniar"was analyzed."Ewiniar"triggered strong precipitation in Meizhou was large in the west and middle, and small in the east.When it was far away from Meizhou, Meizhou had heavy rain, and Meizhou had less precipitation after being closer to Meizhou.The results showed that:Meizhou in the"Ewiniar"typhoon trough front and subhigh edge, and southwest monsoon strong;In the middle and lower troposphere, Meizhou was located in the convective development area of the Northeast sides of the typhoon, and there was a clear convergence of southeast wind.The physical quantity of diagnosis and analysis shows that the rich water vapor transport in the lower layer provides favorable water vapor conditions for the occurrence of heavy rain.The good configuration of low altitude convergence and high-altitude divergence provides dynamic conditions for heavy rain.The high K value provides good thermal conditions for the heavy rain.%利用常规气象资料、雷达、区域自动站资料及NCEP分析资料, 分析"艾云尼"台风梅州降水特点."艾云尼"引发的梅州强降水呈西、中部大, 东部小的态势;其远离梅州时, 梅州普降暴雨, 离梅州更近后梅州降水反而小.分析结果表明:6日梅州处于"艾云尼"台风倒槽前部及副高边缘, 西南季风强盛;对流层中低层梅州处于台风东北侧辐合对流发展区域, 存在明显的东南风风速辐合.诊断分析物理量发现:低层丰富的水汽输送为暴雨的产生提供了有利的水汽条件;低空辐合高层辐散的良好配置为暴雨提供了动力条件;而高K值为暴雨的出现提供了良好的热力条件.
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