Hi Korina.
I work on the Manly ferry service in Sydney Australia and use Windy extensively to see wind and swell forecasts.
I've set up a favourites point between the harbour entrance ,where swells may reach over 5m in bad conditions.
I particularly like the ability to switch between models to check consistency. Also the display of wind and isobars is first class.
Locally some people use a near shore forecast model which is based, I think, on NOAA 3. Do you know if , in broad terms this is similar to GFS?
Finally, given the forecast models have a resolution of several km : When looking at points close together ; are the differences explained by interpolation?
Great program, keep up the good work.
Mal Toon
Writetomaltoon@gmail.com