Abstract：In order to do a good job in monitoring and early warning of heavy rainstorm and short-time heavy rain in Tonggu,the precipitation data,weather situation,radar echo and other data of heavy rainstorm in Tonggu from 2013 to 2023 are used to analyze the process of heavy rainstorm in Tonggu from 2013 to 2023 by statistical analysis,mesoscale analysis of weather map and radar echo analysis.The results show that from 2013 to 2023,there will be 11 heavy rainstorm at Tonggu national station,4 at Gaoqiao regional station,and 4 at port regional station.In some years,there will be no heavy rainstorm,and short-term heavy rainfall will mainly occur at 03:0009:00 and 11:0017:00.The weather situation of Tonggu heavy rainstorm mainly shows that 200 hPa is a divergence and diversion area in northwest Jiangxi,500 hPa has a low trough moving eastward,850 hPa has a shear line in northwest Jiangxi,the lower level is a significant wet area,and 925 hPa has a convergence line with the ground.The echo form of Tonggu heavy rainstorm is a strong echo short band.The strength of the strong echo short band is relatively strong,generally 45~55 dBZ,sometimes 60 dBZ,and the echo length is relatively short.However,the precipitation efficiency of the echo short band is relatively high,especially when the echo strength is ≥ 50 dBZ,it often brings short-term strong precipitation.Special attention should be paid to the development and evolution of echo short bands in forecasting services.It is hoped that the research results provide a reference for Tonggu heavy rainstorm and short-term heavy rainfall forecast and early warning.
2024, Vol. 41 
