My first experience of earthquake was when I was on vacation on Big Island. The wall rattled like someone is keeping hitting it with full force. Then things on

My first experience of earthquake was when I was on vacation on Big Island. The wall rattled like someone is keeping hitting it with full force. Then things on table shaking. I tried to phone the frontdesk of the hotel I'm staying to check it, and the line was busy for at least 10 minutes. Guess everybody is wondering what's going on.