It would be great to also put the Jet Stream on the WINDY site. Think about it......
@Boney-Cat You can do that right now, while on the wind layer, you can select the altitude of the wind you want to see.
Could you explain and or verify the label FL on the slider?
I'm guessing Flight Level
Yes, flight level.
FL is expressed in hundreds of feet.
FL 300 = 30,000 ft
FL 340 = 34,000 ft etc