 urban hydrology has become increasingly important due to the rapid growth of cities worldwide. Rainfall variability is one of the main drivers of urban hydrology, with its effects being particularly pronounced in urban areas due to their complex topography and heterogeneous land use. Recent advances in weather radar technology have enabled researchers to better understand the spatial and temporal variability of rainfall in urban areas. Additionally, new models have been developed to represent the interaction between rainfall variability, catchment heterogeneity, and hydrologic response. Despite this progress, there remains much to be learned about how rainfall variability affects urban hydrology, including the role of catchment heterogeneity and the impact of different types of rainfall events. This article was authored by Cristiano, Nancy Ten-Belduis, and Envanda Gheeson.