Cloud Avalanche-Union County, Oregon

This is a cloud phenomenon that I filmed rolling down Craig Mtn. in Eastern Oregon.
If anyone knows the scientific term for this, please post it.

[@LittleJohnny96]

a moving cloud of icy particles

[@Ultrafitzy]

idk it looks like a roll cloud to me

[@LittleJohnny96]

Noctilucent clouds

[@fishandsheds1771]

Thank you!