The Evaporative Demand Drought Index, or EDDI, transitioned from NOAA’s Physical Sciences Laboratory (PSL) into operational use at the Climate Prediction Center (CPC) in FY25. This new tool for drought prediction received support from JTTI in its FY22 internal funding competition.
EDDI was initially an external research project from our office’s FY16 funding competition, intended to transition to the Office of Water Prediction. Although EDDI did not initially become operational, JTTI determined that continuing development toward CPC was another pathway for it to become part of the National Weather Service’s operations and accessible across the Weather Enterprise.
This story from NOAA Research illustrates how EDDI benefits stakeholders throughout the country.





