A third temblor — with preliminary reports that the quake measured 7.1 on the Richter scale, centered near Ridgecrest — was felt in Los Angeles County, including the Santa Clarita Valley, Friday night.

The quake occurred at about 8:19 p.m. about 11 miles north-northeast of Ridgecrest, according to the Caltech Seismological Laboratory in Pasadena.

Friday night’s quake comes one day after a 6.4 temblor that originated in Ridgecrest on Thursday and a 5.4 aftershock that was felt early Friday morning.

No damage or injuries were reported to the Los Angeles County Fire Department and the Santa Clarita Valley Sheriff’s Station Friday night.

Sgt. Dennis Duarte said the sheriff’s station will follow protocol in providing any updates on all circumstances around the Santa Clarita Valley related to the quake.

Brody De Rebere noticed the quake within seconds while working at a Starbucks in Santa Clarita. He said he started to feel dizzy until he realized the building started to move.

“If it starts to get worse, I need to get people under tables, make sure everybody’s OK, everybody’s safe and then once it starts to mild down a little bit that’s when I get everybody out,” he said. “It is kind of crazy, it’s starting out of nowhere and keeps on moving.”

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Dr. Lucy Jones, Caltech briefing, 10:15 p.m. Friday (excerpts)
“We have had two magnitude 5 aftershocks to the 7.1. The probability of another 5 in the next week is extremely high, probably quite a few magnitude 5s to come. The probability of a magnitude 6 in the next week is over 50%, something probably around 60%, and very preliminary estimate, a probability of a 7 might be as high as 11%.

“So, all of that saying we’re having a very robust sequence, not a surprise; it’s going to continue, there’s no reason to think that it’s going to be stopping.

“So far, we recorded two magnitude 5s, 16 magnitude 4s and over 50 magnitude 3s just in the last two hours. It does seem to be dying down a bit. That first hour we were seeing a lot of stuff. The ground is moving enough that we’re not seeing the smaller earthquakes at this point, we really aren’t seeing anything below magnitude 3 just because the ground’s moving enough from the 4s and 5s that you can’t see below that…

“The aftershocks will continue, following a pretty traditional pattern, but on the high side. … There’s definitely a robust sequence, but it’s far from unprecedented.

“The way (aftershocks) die off with time, and we were seeing it after the 6 and we seem to be getting into the die-off period here on the 7. Whatever number you have in the first 24 hours, the next 24 hours will have about half that many, and the next 24 hours will have about a third that many, et cetera. So, the tenth day will have 1/10th as many as we have on the first day. And what that means is it will go down pretty quickly, and then we’ll have a really long tail where it will continue to have the risk for quite a while.

“The last time we’ve had earthquakes of this size, we were seeing significant aftershocks for more than a year, for several years.”

This is a breaking news story. More information will be added when it becomes available.