This Early Warning System (EWS) for wheat blast disease was developed by the International Maize and Wheat Improvement Center (CIMMYT) in partnership with EMBRAPA and the University of Passo Fundo (UPF) in Brazil, alongside a range of international and national research and extension partners. This effort has been supported by the U.S. Agency for International Development (USAID) funded Climate Services for Resilient Development (CSRD) in South Asia project and the USAID and Bill and Melinda Gates Foundation (BMGF) supported Cereal Systems Initiative for South Asia ( CSISA). These activities are aligned with the CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS) and the CGIAR Research Program WHEAT. Our partners include the Bangladesh Maize and Wheat Research Institute (BWMRI) Bangladesh Meteorological Department (BMD), Bangladesh Department of Agricultural Extension (DAE), Bangladesh Agricultural Research Council (BARC), Bangladesh Agricultural Research Institute (BARI), International Center for Integrated Mountain Development (ICIMOD), the University of Reading (UoR), International Institute for Climate and Society ( IRI). Further support to mitigate wheat blast in Bangladesh has come from several projects that have contributed to this EWS. These include the CIMMYT-led and USAID/Bangladesh supported ‘Training, surveillance, and monitoring to mitigate the threat of wheat blast disease in Bangladesh and beyond’ project. Support was provided by the CGIAR Platform on Big Data through the Crop Modeling Community of Practice. The research and recommendations made in this EWS do not necessarily reflect the views of the above-mentioned organizations.