The rising sea levels and increased storm surges could lead to more frequent and severe flooding in coastal cities, affecting homes, infrastructure, and transportation systems. New Orleans, Miami, and Galveston are particularly at risk due to their low-lying geography. In New York City, areas like Lower Manhattan are vulnerable despite ongoing investments in coastal protection. The risks are compounded by the potential for extreme weather events, which could overwhelm existing defenses and disrupt daily life in these urban areas.