This deposit contains the complete codebase and accompanying dataset used in the research study titled "Spatiotemporal Dynamics of Moisture Influx and Their Role in Precipitation Extremes: A Study of December 2023 in Kayalpattinam", under review in the Atmospheric Research journal. The aim of this work is to conduct a diagnostic study to comprehend the physical mechanisms and moisture transport pathways that led to the occurrence of extreme precipitation events in the coastal town of Kayalpattinam, Tamil Nadu, India. The work provides a holistic approach to understanding the physical processes behind the deluge. Contents of this archive: Python scripts for data preprocessing, model training, evaluation, and visualisation Processed dataset used in the experiments, stored in [format, e.g., NetCDF / CSV] All code and data are provided to ensure reproducibility of the results presented in the manuscript. The IMDAA dataset is an open-source dataset and can be made available upon request. Please cite this deposit using the DOI if you reuse or build upon this work.