Using 0.5°×0.5° ERA-Interim analysis data from the European Centre for Medium-Range Weather Forecasts, hourly and minutely observational data from Automatic Weather Stations (AWS), Doppler radar and wind profile radar, as well as infrared cloud images from the Fengyun 2G Satellite (FY-2G), we investigated two local torrential rain events in coastal Zhejiang Province caused by two typhoons with similar tracks, Soudelor and Dujuan, 2015. Both rain events were generated after the typhoons had weakened to tropical depression or remnants and travelled far from Zhejiang. It was found that the rain event associated with Soudelor was triggered by long-duration convergence of a strong low-level southeast jet and a south jet as well as topography. Meridional circulation with persistent water vapor transfer by summer monsoon provided a favorable background for the long-lasting life cycle of Soudelor and its precipitation. In contrast, the rain brought about by remnants of Dujuan was produced by a mesoscale inverted trough, comprised of the east-northeast boundary layer flow out of the cold high in the high latitudes and the east-southeast wind in the north quadrant of Dujuan. Zonal circulation, weak steering currents under a powerful western pacific subtropical high, water vapor transport cut off by monsoonal retreat, and vortex entrainment were reasons for the rapid decay of Dujuan and reduced duration of rain compared with Soudelor. There was no external transfer or convective available potential energy (CAPE) conversion to kinetic energy for both rain events. Rotational divergent wind effects and energy transfer between resolvable and unresolvable scale motions, as well as frictional processes in the lower and middle levels, were main-impact factors in the kinetic energy budgets of these two rain events. As a result, convective forcing and heavy rain occurred despite the small CAPE of Dujuan. Diabatic heating associated with condensational latent heat released by local precipitation massively increased the sensible heat energy in the air column, and consequently, potentially promoted meso- and micro-scale vortices and an inverted trough. As a result, the rain events were intensified and sustained.