The primary concern is localized flooding, particularly in low-lying and poorly drained areas. Urban regions in South Florida, including Miami-Dade, Broward, and Monroe counties, are at risk of water accumulation on roads, which could disrupt traffic and pose hazards to drivers. Additionally, the high heat index may increase the risk of heat-related illnesses for those spending extended periods outdoors. Residents should monitor weather updates and avoid flood-prone zones during heavy rainfall.