That happened to me once. I was so scared. I stayed in a mobile home too long and when I decide to get out I couldn't. I actually saw what a house "breathing" meant. The noise was so loud and I felt like I couldn't breath.
Well i dont think it was a tornado, although we had warnings...but all of a sudden the wind got up real bad, and large heavy things were being blown all over the place . I didnt wait to see what was going to happen, i grabbed the kids and we headed for the bathroom. When it got quiet I went and checked everything and was surprised at how much stuff had been moved. All of the animals were ok. : ) Pretty scary.