SISOPER BRSUL
Operational forecast in southern Brazil
In this implementation we run an operational forecast based on WRF, ROMS and WW3. The objective is to launch daily 7-day forecasts of winds, precipitation, river discharge, coastal waves and coast sea level rise.
Coastal river flooding has become a problem in southern Brazil in recent years. The most devastating episode occurred in May 2024, when the state of Rio Grande do Sul recorded persistent and extraordinary rainfall, equivalent to three months' worth of precipitation on average in a two-week period, with an average accumulation of 420 mm (Simões-Sousa et al., 2025; Clarke et al., 2026).
