Annie needed a little help down. As far as I know this was the first time she was up there. Early in the morning I heard a crash and bang. I just thought "Oh those cats must have knocked something over". When she wasn't there for breakfast I called her and this is where she was. I'm not sure if she was on the "beam" the whole time or if she jumped to the back window sill too. She had to have made a big jump to get up there, I was impressed.
Many years ago, over 15, I woke in the middle of the night to my bed shaking, closet doors rattling, and a rumbling sound. Again, I thought something like "Those cats are crazy, running around shaking the house". Soon I realized it was an earthquake. ;-) I was a geology student after all. It was my first earthquake, a little over a 5, and I was really excited.