I've experienced quite a few earthquakes since moving to California, and even though they aren't as startling as the first few I went through, those that are close enough - or strong enough - like tonight's can still be a little unnerving. This one wasn't very strong (the strongest I've experienced was almost 8.0), but it was close enough to send our cats into a panic.
I just saw an update that said the earthquake was only 4.1, but it's not unusual to see initial estimates vary.
I've seen no reports of damage, so that is good news.
It's also fortunate that Disneyland had closed for the evening. I don't think there was a game scheduled tonight at Angel Stadium.
And I don't think it was close enough to do any damage to San Onofre .
I live in Anaheim, which is fairly close. Perhaps someone in the Kos community lives closer or has more accurate information and would like to offer an update.