Two Black cubes flew between clouds

I went outside to see what was going on after a huge gust of wind hit my house (I almost got knocked over when I stepped outside), when I went outside there was almost like a comet trail in the sky. The wind would die down and creep back up again. I watched the haze for about 5-10 minutes as it moved Southwest. After that I decided to go back inside the house. But before I got back in I saw a super quick flash of light, almost like lightning, but way faster (like under a second long). In total I saw 2 flashes. I decided to stay back outside since it startled me. I looked back up and there was an opening in the clouds directly over my house. I saw two black cube objects with no lights visible fly from one cloud to another moving South. From what I saw both objects were gray/black and were in the shape of a cube. I have had UFO encounters before, such as objects in the sky similar to tonights. I have had one encounter with what I think is Bigfoot. Through-out my life I have had multiple weird encounters with UFO/Un-documented creatures (I.e Bigfoot).
I posted about this on Facebook and multiple people (In Montana & Utah) have stated similar encounters, the encounter in Utah, which occurred roughly 1 hour ago, saw similar flashing lights. Him and his friend grabbed their phone to try to get a photo/video but were unsuccessful.
Other people in Flathead County are saying they saw the same haze effect before I saw the UFOs. I strongly think the haze is Northern Lights although what strikes me as very weird is every time I have seen the Northern Lights they have been towards the North. Not to the West like tonight. I have provided a short time lapse I took of the haze. I did not see any other streaks of haze in the sky.