When I was about 6 years old I had an experience in my stepmother's house that still nags at me.
I was lying in bed on a particularly windy night. I couldn't sleep because the sound of the wind was so loud. I was staring at my ceiling when all of sudden, all at the same time the noise of the wind picked up to the point where it sounded like I was inside a tornado (we don't have tornados in the area I'm from.), I heard a large bird cawing and a black and red smoky swirl thing started opening up above my head. It grew to the size of my entire room until my whole ceiling was a giant red and black swirling vortex and flying just around the outside of the vortex was a very large bird.
I couldn't feel any wind, or smell any smoke and I couldn't make out exactly what time of bird it was because I could only see the underside of it. But I heard everything perfectly.
I stared at it really hard for what seemed like a very long time then I blinked really hard a few times, but it was still there. I know what I saw and heard, I know I wasn't dreaming. I have heard of a vortex before and I guess that's what most people would probably call it but I have seen pictures on line of funny shaped lights and things of that nature that people call vortex's and that was nothing like what I saw that night. So, I really don't know what to make of it.
Has anyone else ever had a similar experience?