I was recovering from my cancer adventure (and retinal detachment, and cyst removal, and ... and ...) and was at the air museum doing some research. My swivel chair began to move and I got vertigo; I figured I was having a stroke. (Like, what's next ...).
Then I noticed the wings of our big VS-44 on display were slowly moving up and down. All the planes in the hangar seemed to be flapping their wings. Totally weird.
That was the 5.8 that hit down near Washington DC in 2011. Felt all the way up to Maine.