A detailed assessment report on the flood events in northern Spain in December 2019 has now been published on the EFAS website. This report focuses on three river basins during this event. The report provides understanding of the EFAS forecasts in terms of accuracy, timely availability, and effective communication of the forecasts. The report evaluates the accuracy of the EFAS forecasts, while commenting on the hydrological forecasting skill and model performance over the region of northern Spain for this event.