“…During the warm season, an abundance of organized storm types is observed, such as long‐lived mesoscale convective systems (Huang, Liu, et al, 2019), squall lines (Meng et al, 2013), supercells, and tornadoes (Bai, Meng, et al, 2020). As a result, monsoon rainfall exhibits a complex spatiotemporal nature along the coasts of South China (e.g., Chen et al, 2018; Li et al, 2020). In particular, the pronounced subseasonal/diurnal variations in convection and rainfall are demonstrated to be highly related to the summer monsoon, complex terrains (island, peninsula, and mountain), and land‐sea breeze circulations (e.g., Chen, Zhao, & Xue, 2014; Houze et al, 1981; Luo et al, 2017).…”