Very preliminary AP report notes, "The late Tuesday morning jolt was felt from Los Angeles to San Diego, and slightly in Las Vegas."

More from CNN:
A magnitude - 5.8 earthquake has struck just east of Los Angeles, according to the U.S. Geological Survey.
The quake's epicenter was about 2 miles southwest of Chino Hills and about 5 miles southeast of Diamond Bar, the USGS said. Chino Hills is about 30 miles east of downtown Los Angeles.
The center was about 7.6 miles deep. In general, earthquakes centered closer to the Earth's surface produce stronger shaking and can cause more damage than those further underground.
A 5.8 magnitude quake is considered by the USGS to be "moderate," which can cause slight damage to buildings and others structures. About 500 can happen globally each year, the survey says.

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Geez, Chino Hills (and 3.8 meg in Diamond Bar later), it is the nearest epicenter I 've ever approached to: about 7-10miles away.

I was cooking my lunch when this "wake-up call" occurred . In a sudden, my house trembling and the trees outside shaking---and the word "earthquake" jumped into my mind. Only wearing a mini pant (only dare to wear this at home....at least, it is not an "under" .. haha~~ ) and a sleeveless shirt, I slided out of the kichten to the backyard towards the Colima Blvd. Cars were passing by under my hill as usual. Having experienced quite a few times of mild earthquakes since I got here,I was not in panic but more of curiosity. While, the quake continued . Staring at the shivering world and hearing the tinkling of thr housewares, I could not help wondering "will it last long? wat happen if it become much stronger and devestating ? hmmm....It IS much more stronger than chunky me shake my house by my rope skipping ~~ oh ... it ll be funny to be buried with such short pants on...=_= .."

I went upstairs when everthing calmed down except for the chiming wind bells.TV channels had begun the live broadcasting about the earthquake: no damage reported so far. My at&t cell connection paralyzed (have not checked my Sprint one) for a while. No calls in , no calls out. I sent a text and did not get response till 90 mins later . I chatted with some friends in the area via MSN and everbody is ok.

The official speaker,a lady professor from Caltech noted " it was a fairly strong earthquake."

That is ok.