Recent Assessments agree that extreme heat events will become more frequent and intense as our climate changes. To address this issue and build on the emerging capacity to predict heat on climate time scales, NOAA (OAR, NWS, NESDIS), the Deutscher Wetterdienst (German Met Service), the Centers for Disease Control and Prevention (CDC), the World Meteorological Organization (WMO), and the Global Framework on Climate Services (GFCS) are joining forces, along with other partners, to explore lessons learned and share best practices in order to develop climate information systems for heat health early warning.