Strange cloud formation over southern BC explained

A very cool phenomenon. I'm sure that a few people were somewhat disappointed that it was alien robots or something.

It’s certainly pretty bizarre, and definitely something you don’t see every day. However, it’s entirely natural. No alien or divine intervention required, and it’s not harmful in the least.

It’s a fallstreak hole, so-called because the water in that region of the cloud is falling to earth, producing those pronounced streaks it does, and leaving behind a hole in the cloud.