No, I think it was actual thunder. I had the radio on and the heat was running, and one of my ears was stopped up, so I couldn't hear it very well, but I felt it. Sounded and felt like a stampede through the lawn out front. Lol. The dog heard it, because he put his ears down and back and was shaking. I lowered the volume on my radio so I could try and hear what the heck was going on. At the tail end of doing that, I thought it then sounded like it started pouring down rain for a couple of seconds. Then, I started thinking I better actually get up and see WTH was actually going on. Because I thought what if what I actually heard was galloping, and it was the horses that got out if the barn, or something was going on. So I got up and opened my door and didn't see anything going on outside. It was a lot warmer than it had been earlier, and it was foggy. I concluded it was probably thunder and I got back in bed.