The Mid-Atlantic Regional Integrated Sciences and Assessments (MARISA) Regional Climate Impacts Summary and Outlook is a quarterly series produced by the MARISA program, a collaboration funded by the National Oceanic and Atmospheric Administration through the RAND Corporation and researchers at Pennsylvania State University, Johns Hopkins University, Cornell University, and the Virginia Institute of Marine Science. This series draws information from regional climate centers, news and weather information, and high-resolution climate data sets for the benefit of policymakers, practitioners, residents, and community leaders in the Mid-Atlantic region, with a focus on the Chesapeake Bay watershed. Projections of future climate in the Chesapeake Bay watershed come from the best available scientific information. For this winter 2020–2021 version of the series, Part 1 details significant weather events that occurred from December 2020 through January 2021; Part 2 characterizes seasonal temperature, precipitation and snowfall compared to historical averages; Part 3 describes seasonal weather forecasts and pertinent information for the upcoming spring season; and Part 4 presents an interactive tool that shows historic snowfall in the Mid-Atlantic from 1981 to 2019.

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This research was prepared for the National Oceanic and Atmospheric Administration and conducted by the Community Health and Environmental Policy Program within RAND Social and Economic Well-Being.

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