Severe coastal disasters were caused by high waves due to winter depression along the Toyama Coasts on February 2008. Hindcast simulations of wind and wave were carried out for the Hokuriku area by using the GFS-WRF-SWAN Wave Prediction System, and these results were found to be enough accurate compared with observed data. It was also confirmed that a real time wave prediction system using hourly analyzed atmospheric GPV is usable for the prediction of ‘Yori-Mawari Wave’ along the Toyama Coasts. The wave concentration along the breakwater of Fushiki Toyama Port due to refraction and diffraction due to unique topography called ‘Aigame’ was simulated, and the concentration location corresponded well to the damaged location estimated from the damage analysis of the breakwater