The PWG/PWE wave models are only run at 50km resolution, and this is not high enough resolution to create an accurate swell forecast on a lake.
We do provide the ECMWF wave model, and this forecast is available on the Great Lakes. This model is run at 14km resolution, and considered one of the best waves models in the world.
*This data is only available on the Professional Subscription. Please email support@predictwind.com to trial this subscription