@Peter-Llanes
Himself...:-)
This web app who has inspired Windy at beginning has a very rough UI compared to that friendly of Windy. It has not really evolved since it was shown to me in 2015 while sailing in the Scilly.
Now it includes the probability of polar aurora, and for those interested by this subject, the tropospheric and stratospheric polar vortex can be shown.
To learn more about the content of this app click on « Earth », then on « About ». This app is based on GFS data.