PHOENIX (3TV/CBS 5) - An earthquake expert with the Arizona Geological Survey says an earthquake as big as the one in Ridgecrest could happen in Arizona.

Friday's earthquake had a 7.1 magnitude.

[WATCH: A major earthquake could happen near Yuma or Flagstaff, expert says]

"A magnitude 7.0 and above would be very big and very disruptive here," said Michael Conway, with AGS. "A magnitude 6.0 would do some damage too."

[RELATED: Strong earthquake in Southern California felt in Arizona, Phoenix area]

The Lake Mary fault near Flagstaff has the potential to cause some destruction.

"It's tens of miles long, and it's capable of producing a magnitude 6.5 to 7.0 earthquake if it were to rip along the entire length," said Conway.

[RELATED: WATCH: California earthquake rattles TV station during newscast, anchors take cover]

He said we would feel it in Phoenix, but it likely would only cause damage up north.

"They might cause a lot of damage on the I-17 and I-40 up here, and the railroad lines that go through Flagstaff, so it would be a major impact on transportation through northern Arizona," said Conway.

[RELATED: California earthquake created a massive crack in the Earth visible in satellite images]

He said it will rupture eventually, but it's a mystery when.

"Unlike the San Andreas and some of the faults in Arizona, these faults have not been terribly well studied, so we don't know much about their histories."

He said the fault west of Yuma is capable of ripping a magnitude 7.0 to 7.5.

You can check the faults near you on this map


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