ABSTRACT Extreme weather events pose a growing threat to the health and development of vulnerable populations in the United States. Psychological distress from extreme storms often persists for years, air pollution from wildfires increases the risk of adverse birth outcomes, and floods spread contaminants in land and water. While the threats from chronic extreme weather to wellbeing are clear, research has predominantly focused on the effects of extreme events, rather than how the “new normal” under chronic extreme weather and its effects broadly can cause frequent disruptions and long-term stress for households and communities. For many coastal communities, sea level rise is creating a new normal with routine flooding from monthly high tides and rain. While those floods are not as catastrophic as hurricanes, their near-certain occurrence causes different problems – and potentially leads to different responses – than low probability hurricane strikes. Understanding the impacts of these chronic stresses, alone and in combination with acute disasters, is necessary for enabling effective adaptation. This K01 Award proposal will advance our understanding of the impacts of chronic and acute coastal flooding on migration and stress. By building on my expertise in exposures and impacts, it will accelerate my progress towards my career goal of becoming an independent researcher at the intersection of extreme weather and population science. I will train in demographic theory and methods, conduct guided readings with my mentors on measurement of psychosocial and physical health, and develop survey design and analysis skills. Then, I will apply those skills to study the interactions between flooding, migration, and health in coastal communities in the US. My research aims are: 1) to characterize the relationship between flood experience and in- and out-migration, 2) to analyze how health, economic resources, and flood experience shape migration intentions, and 3) to assess the health and economic wellbeing of movers and stayers. To achieve these aims, I will draw on two primary datasets: an administrative dataset consisting of individual address histories for most adults in eight Atlantic coast states, and a detailed household survey currently underway in four coastal North Carolina counties. My mentor team, with expertise in environmental migration, survey methods, and health measurement, are ideally suited to help me achieve my research and training goals. The outcomes of the research and data collected in this study will form the basis for future R-level proposals to expand the geographic scope of the household survey on the impacts of coastal flooding and to examine the health and development impacts of sea level rise on children and young adults.