The dynamics of the wind-forced Kuroshio variability in the Luzon Strait are studied using a 1.5-layer reduced-gravity nonlinear shallow-water equation model. The domain of the model is a simplified representation of the western Pacific geometry, with a thin gappy wall separating the rectangular model domain into the western and eastern basins. The circulation in the eastern basin is forced by a cosine wind curl to simulate the subtropical gyre circulation of the North Pacific Ocean.