NOTE: Click on the map below for data at a specific location.

date:   time:  depth: m  unit:

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Disclaimer: These model results provide a scientific prediction of existing and future conditions. As with any forecast, however, accuracy cannot be guaranteed and caution is advised. While considerable effort has been made to implement all data components in a thorough, correct, and accurate manner, numerous sources of error are possible. The data are provided free of charge without warranty of any kind.

Disclaimer: These data were generated as part of an academic research project. Accuracy cannot be guaranteed and caution is advised. While considerable effort has been made to implement all data components in a thorough, correct, and accurate manner, numerous sources of error are possible. The data are provided free of charge without warranty of any kind.

PacIOOS’ Simulating WAves Nearshore (SWAN) model is a 5-day, hourly forecast for the region surrounding Apra Harbor on the west coast of the island of Guam at approximately 50-m resolution. The forecast is run daily and gets updated on this website around 10:00 PM Chamorro Standard Time (UTC+10) each day. This high-resolution wave model helps capture shallow water effects and nearshore coastal dynamics such as refracting, shoaling, and shadowing. SWAN (http://swanmodel.sourceforge.net) is an open source wave model developed at Delft University of Technology in the Netherlands. Model runs are configured and produced for the Apra Harbor region by Dr. Kwok Fai Cheung and lab within the Department of Ocean and Resources Engineering (ORE) in the School of Ocean and Earth Science and Technology (SOEST) at the University of Hawaiʻi at Mānoa. Boundary conditions are provided by the wider SWAN model for the region surrounding Guam (swan_guam) at approximately 500-m resolution.