I felt my first earth tremor this afternoon. I was in the ladies' room of my kids' school chatting with another mom, as ladies are wont to do, & suddenly felt vertiginous. I had to take a step back to prevent myself from toppling over, & thought I had either developed an inner ear problem or was having a stroke of some kind!
It was quite disconcerting, that feeling of imbalance & instability.
I later found out that the tremors were due to aftershocks from an earthquake (7.7 on the Richter scale) in Sichuan. I hope there aren't too many casualties :(