In my California experience, if you happen to be on the ground, and especially outdoors, you’d hardly feel it....just the sense of some underground rumbling.
No, you could feel it on the ground. I was in my house and went outside to see if there were any clouds of jet-fuel smoke rising into the air, as there were on 9-11. The ground was vibrating strongly. (The shaking went on long enough that I had plenty of time to put down the laptop and go downstairs and out, quite a long way.)