South Africa is home to one of the world's strongest ocean currents - the Agulhas Current. Strong currents have been shown to modulate ocean surface waves in their vicinity; for example, steepening waves where they oppose a current, or changing their direction of propagation when encountering one obliquely. This information is important for safety of shipping. The product below is a one-way coupled wave forecast in which forecast surface waves (from the SAWS SWaSS forecast) interact with ocean surface currents from the Mercator global ocean forecast
. The details of this system and the forecasts shown can be found in the paper Toward Operational Wave-Current Interactions over the Agulhas Current by Barnes and Rautenbach (2020)
. Forecasts should be used with caution as the surface current product remains unvalidated around our coastline. The product is intended as a general guide for the Agulhas Current's possible effects on waves.