One of the main objectives of the SLAPIS Sahel project is to strengthen numerical weather forecasting (NWF) capabilities in order to support the hydrological early warning system. In this context, Niger’s National Meteorological Service (DNM) and Burkina Faso’s National Meteorological Agency (ANAM) have made the strategic decision to develop a weather forecasting chain based on the MOLOCH model.
MOLOCH is a non-hydrostatic regional model developed by CNR-ISAC (Italy). It enables the production of very high spatial resolution forecasts and explicitly represents convective phenomena. The model solves the non-hydrostatic and fully compressible equations of the atmosphere, with a horizontal resolution of up to 0.0113° (1.25 km), 60 atmospheric levels, and 13 ground levels.
It was in this context that a training seminar was organized from November 3 to 7, 2025, in Ouagadougou, Burkina Faso, for the benefit of weather forecasting and modeling experts from ANAM in Burkina Faso. This training aimed to ensure a transfer of skills between the various stakeholders (Burkina Faso, Niger, Italy) for the management and operation of the MOLOCH model. 15 experts attended the seminar, which was followed by a two month period of post-training activities. The main outcome of this seminar was the installation of a MOLOCH-based forecasting chain on ANAM servers. The chain consists of a 3k resolution model nested onto a 9 km model initialized with GFS forecasts. The chain is being actually tested before becoming operational.
