How do Windy measure wave height?

[eklyng]

Hi!
Is the wave height measured from still-water line to the highest point(crest), or is it measured by the vertical distance between the lowest point(trough) and the highest point(crest)?
Thanks!

[Gkikas LGPZ]

@eklyng
Wave height is measured from a crest to the neighbouring trough.
Forecast data you find here are the "Significant Wave Height"
https://en.wikipedia.org/wiki/Significant_wave_height