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Peru Earthquake 6.7 Magnitude Shakes Southern Andes: What California Should Know

By CAL WIRE Weather Desk — Thursday, August 20, 2026
By CAL WIRE Weather Desk  |  PUBLISHED: Thursday, August 20, 2026
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Photo: Rob Olivera / CC BY 2.0

A magnitude 6.7 earthquake rocked Peru's southern Andes on Tuesday, according to the U.S. Geological Survey, and seismic watchers here in California are paying close attention. No immediate damage or injuries have been reported, per early accounts from AP News and ABC News, but the quake was strong enough to register across monitoring networks that track Pacific Ring of Fire activity.

Related: Earthquake Bay Area: What We Know Right Now · Earthquake Reported in California: What We Know Right Now

For Californians, this isn't just a far-away news item. The state sits on the same Ring of Fire that runs along the western edge of South America, and seismic experts here routinely track significant quakes across the Pacific basin to update regional risk models. A 6.7 is serious - it's the same magnitude as the 1994 Northridge quake that caused billions in damage across Los Angeles.

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This story is developing. Details including exact location, depth, and any damage reports are still coming in and may change.

What We Know Right Now

California seismic activity monitoring.
California seismic activity monitoring.Photo: mercurynews.com

The USGS confirmed the 6.7 magnitude reading. The quake struck Peru's southern Andes region, though a precise epicenter had not been widely confirmed in early reports. No tsunami warning has been reported in connection with this event, and no casualties have been announced as of this writing.

See also: Earthquake Near Corona, Orange County: What We Know About Today's Shaker · Colombia 7.4 Earthquake Shakes Ring of Fire — What It Means for California

Why California Is Watching

California seismic monitoring agencies track large quakes anywhere along the Ring of Fire, the horseshoe-shaped zone of fault lines and volcanoes circling the Pacific Ocean. A significant event in South America can provide data that refines how scientists here assess stress on faults like the San Andreas. It doesn't mean a California quake is imminent, but experts use every major event to sharpen their picture of regional seismic risk.

What Californians Should Do

No action is required right now. But this is always a good reminder to check your earthquake kit, know your building's vulnerabilities, and review the state's MyHazards tool at myhazards.caloes.ca.gov. CAL WIRE will update this story as more details come in from Peru and from California monitoring agencies.

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Filed Under: Weather Peru Earthquake Magnitude Shakes