On May 23, 2023, the EPA Office of Research and Development with the EPA Region 2 office held a workshop in New York City to discuss how to develop effective messaging on the impact of hypoxia (low dissolved oxygen in water bodies) in Long Island Sound. As part of the proceedings, scientists, resource managers, science communicators, outreach coordinators, and local environmentalists identified engagement approaches to use hypoxia forecasting in improving public awareness about hypoxia in Long Island Sound. The Messaging and Forecasting Hypoxia for Long Island Sound Workshop shared information on the early work on the hypoxia forecasting model for Long Island Sound and elicited perspectives of attendees on key audiences and design for related communication products. The workshop proceedings presents the motivation for the workshop, the structure of the event, and the findings from the day’s discussions. It’s available as a PDF document.