A series of earthquakes rattled Southern California Monday night, the strongest of which was recorded at magnitude 5.7, the United States Geological Survey reported.

The 5.7-magnitude quake hit the area just north of the California-Mexico border at around 21:29 local time. Its center was located at 70 miles east of San Diego.

Amy Vaughan, a geophysicist at the USGS in Golden, Colorado, said, “Since the 5.7 occurred, we’ve had another larger series of aftershocks occurring. We’ve had about 40 occuring since that with the largest being about a 4.5.”

“We’ve had over 12,000 ‘felt reports’ coming in from most of Southern California, parts of Arizona and parts of Baja California,” she added.

Authorities received no reports of any kind of damage in the area.

“Were this a 7.5 it would be a different story probably, but because it’s a 5.7 occurring in this area and also not directly in a large metropolitan area, like it’s not downtown LA or downtown San Diego, helps as well,” Vaughan explained.

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