6.7 Earthquake Jolts Southern Peru, Reviving Memories of a Quake That Killed Nearly 600

A magnitude 6.7 earthquake struck southern Peru on Thursday, August 20, at 1 p.m. local time (1800 GMT), centered about 38 kilometers (24 miles) northwest of Upahuacho in the Parinacochas province of the Ayacucho region at a depth of roughly 66.7 kilometers, according to the U.S. Geological Survey; Peru’s own Instituto Geofísico measured it higher, at magnitude 7.2. Strong shaking was felt across southern Peru, including the Ica and Arequipa regions, though the USGS reported no immediate injuries or damage as authorities began assessing outlying Andean communities. Peru sits within the Pacific Ring of Fire, and the same Ica region was devastated by a magnitude 7.9 earthquake in 2007 that killed nearly 600 people [1].

Why It Sucks:

Residents of the Ayacucho Region

• A major quake hit almost directly overhead. The epicenter sat just 38 kilometers from Upahuacho at a depth of 66.7 kilometers, meaning residents of Parinacochas province absorbed the strongest shaking with little distance to soften it [1].
• It struck in the middle of the workday. The 1 p.m. timing meant many residents were in schools, homes and workplaces when the ground shook, leaving families to wait anxiously for confirmation that “no immediate damage” holds up once remote communities are reached [1].
• The trauma of 2007 is still fresh. The region lived through a magnitude 7.9 quake in 2007 that killed nearly 600 people in Ica, so a quake of this size inevitably reopens old fear even before damage assessments are complete [1].

Peru’s Disaster-Response Agencies

• Officials must scramble across three regions at once. With strong shaking reported in Ayacucho, Ica and Arequipa simultaneously, emergency responders face a wide, mountainous area to assess with only preliminary USGS data to go on [1].
• Conflicting magnitude readings muddy the response. The USGS’s 6.7 reading and Peru’s own Instituto Geofísico reading of 7.2 give officials two different pictures of how serious the event actually was, complicating public messaging in the critical first hours [1].
• The Ring of Fire never lets up. Peru’s position on one of the world’s most seismically active belts means agencies must repeatedly mobilize for major quakes, straining resources that could otherwise go toward long-term preparedness [1].

Southern Peru’s Tourism-Dependent Communities

• Arequipa felt it too. The historic city, a major hub for travelers visiting the Colca Canyon and southern Andes, was among the areas where strong shaking was reported, raising the kind of unease that can make visitors reconsider trips even without confirmed damage [1].
• “No damage reported” isn’t the same as “no damage.” Early wire reports reflect only what’s confirmed in the first hours; for businesses that depend on tourists feeling safe, the ambiguity itself is bad for bookings regardless of how the final damage assessment turns out [1].
• A region already scarred by 2007 wears every quake differently. Communities near Ica, still associated with a disaster that killed nearly 600 people, face outsized reputational risk from any earthquake headline, deserved or not [1].

Sources & Citations:

[1] ABC News (AP): Magnitude 6.7 earthquake shakes Peru’s southern Andes, USGS says