The SWAN project in Southern Region is an experimental wave modeling project. The model is run at Southern Region Headquarters and at all Southern Region coastal forecast offices. The forecasts are produced using the Simulating WAves Nearshore (SWAN) wave model and the Real Time Ocean Forecast System Gulf Stream Forecasts.
The SWAN output is used as guidance to produce marine forecasts at the coastal forecast offices. NOTE: The SWAN output is only experimental and it may differ from the official forecast. For the official marine forecast graphics on the Web go to: http://www.weather.gov/forecasts/graphical/sectors/.
Please take the following survey to give feedback on the SWAN product : http://www.nws.noaa.gov/survey/nws-survey.php?code=SWNMO.
A description of the SWAN model output is available at : http://products.weather.gov/PDD/PDD%20NWPS%20Model%20Output%20060413.pdf.
The New Orleans/Baton Rouge Louisiana SWAN forecast for the open coastal waters area is located at:
The SWAN model forecast for the lakes and sound areas is located at:
The graphical output of the Regional SWAN run can be viewed at the link below:
Southern Region Headquarters SWAN Run
Southern Region Headquarters RTOFS Input Data
At the above link you will see 3-hourly forecast outputs for significant wave height in feet and peak wave direction, peak wave period, and significant swell height. In addition you will see the wind speed and direction used as input for the model.
The raw input data used for wind forcing can be downloaded at the following link:
Southern Region Headquarters SWAN Input Winds
The netCDF output of the model run can be downloaded at the following link:
Southern Region Headquarters SWAN netCDF Output
NOTICE TO ALL USERS - This model is experimental and may not be available at all times.
The accuracy or reliability is not guaranteed or warranted. The data are provided 'as is' and
should not be used as the sole resource for decision making. Marine forecast guidance is best
interpreted by a professional meteorologist who is familiar with this particular modeling
system, including any model biases.