Regional Ocean Modeling System (ROMS) 3-day, 3-hourly forecast for the region surrounding the south shore of the island of Oahu at approximately 200-m resolution. Boundary conditions provided by the wider ROMS model for the region surrounding the island of Oahu (roms_hiog) at approximately 1-km resolution. Atmospheric forcing generated by the Weather Research and Forecasting (WRF) model for the region surrounding the island of Oahu (wrf_oa) at approximately 1.5-km resolution. Tide forcing uses the Oregon State University (OSU) Tidal Prediction Software (OTPS) TOPEX/Poseidon global inverse solution (TPXO) to derive barotropic tidal elevation and velocity. Data are assimilated over the previous 3 days using all available observations to improve the model estimate of current ocean state (its nowcast) before forecasts are run. Assimilated observations may include satellite-based sea surface temperatures from MODIS, AVHRR, or OSTIA; satellite-based sea surface height from AVISO; surface currents from PacIOOS high-frequency radios (HFR); and in-situ water temperature and salinity profiles from ARGO floats and ocean glider autonomous underwater vehicles (AUV). While considerable effort has been made to implement all model components in a thorough, correct, and accurate manner, numerous sources of error are possible. As such, please use these data with the caution appropriate for any ocean related activity. cdm_data_type = Grid VARIABLES (all of which use the dimensions [time][depth][latitude][longitude]): temp (potential temperature, Celsius) salt (salinity, 1e-3) u (u-velocity component, meter second-1) v (v-velocity component, meter second-1)