The SA-Southeast Forecast product provides a 5 day forecast of the ocean state along the southeastern coast of South Africa centered around Algoa Bay, and is updated daily. This product represents the operational version of the SA-Southeast Hindcast V1.0 product, and forms part of SOMISANA's South African Coastal Ocean Forecast System West (SACOFS). The model was developed using the Coastal and Regional Ocean COmmunity (CROCO) modelling system. The model curvilinear grid has a variable horizontal grid resolution (0.5 – 3 km) which increases toward the coast. The model has 30 terrain-following (sigma) vertical levels. Model bathymetry is interpolated from digital navigation charts provided by the South African National Hydrographic Office (SANHO). Open boundary conditions for our models are obtained from two ~9 km resolution global ocean analysis and forecast products: Mercator and the Hybrid Coordinate Ocean Model (HYCOM). Surface forcing for our models is obtained from both the...