Atmospheric Fog "Tearing"

I’m getting a weird lighting issue with my atmospheric fog. Depending on the directional light actor rotation, I get these weird beams of light spanning a large portion of my sky, kind of like a light tear, for lack of a better example. Here’s a picture.

Anyone seen this before?

You sure it is not happening because of your skybox?

It doesn’t happen when atmospheric fog is off, though it could be my skybox, I’m not sure.