A 3-meter sea level rise would have catastrophic consequences for U.S. coastal cities. In Florida, cities like Jacksonville, Tampa, and Fort Lauderdale could face chronic flooding, while low-lying communities may become uninhabitable. On the East Coast, areas such as New York City, Charleston, and Norfolk are at risk, with critical infrastructure like airports and stadiums potentially submerged. The West Coast would also see impacts, with flooding in San Francisco, Oakland, and San Diego. Beyond urban areas, natural reserves and wildlife habitats could be severely affected, leading to ecological disruptions.