Felt it very strong in my office, right outside the airport in Ontario. My friends in LA felt it as well. My wife called in from Redlands, and nothing was felt there.
I live in Ontario as does my Mom, my best friend lives in Upland. Glad to hear that there is no damage there. We were in Brea and the shaking was quite intense and very long. Worst I have felt since the Upland quake in 90.