"I got the inspiration to make this wave from the tutorial 'Create an Explosive Color Swath' and
this picture.
I used a random noise gradient and warped it in to a wave shape. I then
used a paintbrush to paint three bands of color and blurred it to mix
the colors. After I used different sized brushes with scatter paint out
the white water. I duplicated, blurred and colorized the white water
layer to have the effect of it glowing."