PHOENIX (3TV/CBS 5) - An earthquake shook Southern California and people in Arizona could felt it too.

It happened just before 8:30 p.m. on Friday.

[RELATED: The earth under Southern California is rumbling with about one aftershock every minute]

The earthquake's epicenter was about 11 miles from Thursday's 6.4-magnitude earthquake in Ridgecrest, California, according to the United States Geological Survey.

[WATCH: California governor gives update on biggest SoCal earthquake in 20 years]

The earthquake was originally reported as a 7.1 magnitude earthquake and then reportedly downgraded to 6.9. However, scientists with the USGS later said it was 7.1.

[RELATED: 7.1 magnitude earthquake causes cracked roads in California town]

Officials in San Bernardino County reported homes shifting, foundation cracking and retaining walls coming down. At least one person suffered minor injuries and was being treated by firefighters, they said.

Gas leaks caused structure fires throughout Ridgecrest, residents reported water main breaks, and the power and communications were out in some areas, Mark Ghilarducci, Director of California Governors' Office of Emergency Management, said.

[WATCH: California earthquake shakes homes of Arizona's Family viewers]

The earthquake also rattled our Los Angeles affiliates KCAL and KCBS' studios while they were on the air for their 8 p.m. newscast.

[WATCH: California earthquake rattles our LA affiliate KCBS/KCAL during their newscast, anchors take cover]

On Saturday, the USGS tweeted a photo of heavy damage on Highway 178 near the town of Ridgecrest. USGS officials said the highway is closed for repairs. 

According to Dr. Lucy Jones, a seismologist, Thursday's quake was a foreshock. She said Friday's earthquake was on the same fault.

Scientists said Friday's earthquake was 10 times stronger than Thursday's.

[WATCH: Arizona's Family anchor Yetta Gibson in California during earthquake]

The quake was felt downtown as a rolling motion that seemed to last at least a half-minute. It was felt as far away as Mexico and Las Vegas.

If the preliminary magnitude is correct, it would be the largest Southern California quake in 20 years.

People from all over the state of Arizona said they could feel it, from Lake Havasu City to Chandler to Congress to Sun City.

A woman in Avondale sent Arizona's Family video of her pool shaking during the earthquake.

[WATCH: Avondale woman's pool shakes due to Southern California earthquake]

Our own Heather Moore and Jared Dillingham said the lights and monitors in the studio during the 3TV News at 8 p.m. newscast were swaying.

[WATCH: Arizona's Family studio shakes due to Southern California earthquake]

Rudy Rivas, a news manager for Arizona's Family, was in San Diego and was at dinner.

"Our table shook for 30 seconds at dinner and all of us looked at each other and thought, 'Oh my gosh, are we having another earthquake right now?'" said Rivas. "It wasn't anything too violent in San Diego. It was just a gentle 30 seconds of shaking."

The NBA had to stop their Summer League game between the New Orleans Pelicans and the New York Knicks in Las Vegas because of the earthquake. The games were then postponed.

The Los Angeles Dodgers were playing at home and tweeted video out of their camera shaking.

Ridgecrest is 150 miles north of Los Angeles.

Thursday's earthquake produced more than 1,400 aftershocks, scientists said on Friday.

The Associated Press contributed to this report.


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