NSW Nearshore Wave Forecast

The NSW Nearshore Wave Forecast tool allows users to visualise wave conditions along the NSW coast within a rolling time window, combining recent offshore wave observations from the NSW Waverider buoy network with the NOAA WAVEWATCH IIIĀ® ocean wave forecast. The tool transfers the observed and forecast offshore wave conditions to nearshore locations along the NSW coast.

Using the Map interface users can navigate along the NSW coast and visualise nearshore wave conditions within the rolling time window, at over 14,000 locations along the 10m and 30m water depth contours. Coloured arrows indicate the direction and height (colour) of waves at each location. Clicking on an arrow reveals the wave height (Hs), period (Tp) and direction at that location for the specified day and time.

An option to plot the time series of wave conditions through the rolling window at a user selected location can also be accessed by clicking the arrow of interest. The time series plots compare the wave height (Hsm), direction (Dm) and period (Tpm) for recent days based on offshore Waverider buoy observations, with wave height (Hsf), direction (Df) and period (Tpf) for recent and coming days based on the offshore wave forecast.

All data is in Australian Eastern Standard Time (AEST), which is GMT+10:00, and is not corrected for daylight savings time. The NSW Nearshore Wave Forecast is currently a beta version. Your feedback is welcome - please mail us.

NSW Nearshore Wave Transformation Project

The NSW Nearshore Wave Transformation Project is a collaboration between the NSW Office of Environment and Heritage (OEH), NSW Public Works Manly Hydraulics Laboratory and Baird Australia.
The project has developed a suite of tools to efficiently transfer offshore wave conditions measured by ocean Waverider buoys, and simulated by global and regional ocean wave models, to nearshore locations along the entire NSW coastline.

The foundation of the wave transformation tools is a database that stores pre-computed nearshore wave conditions corresponding to the full range of offshore wave conditions experienced along the NSW coast. The tools take observed or modelled offshore wave conditions and use the database to identify the corresponding nearshore wave conditions. The database has been developed through a state wide high-resolution wave simulation study to better understand how ocean waves change as they move from deep ocean waters to shallow coastal waters.

The wave transformation database has been validated at limited locations only to date, and work is underway to measure nearshore wave conditions at representative locations along the NSW coast. The wave transformation tools will be progressively improved as high-resolution bathymetry and nearshore wave observation data become available.

For further information please contact the NSW Office of Environment and Heritage (OEH).