Peru Earthquake Today: IGP Seismic Report and Latest Tremors

The Instituto Geofísico del Perú (IGP) reported a 3.5 magnitude earthquake on July 23, 2026, at 23:48 hours, striking 23 kilometers south of Vitor in the Arequipa region at a depth of 15 kilometers, with local residents feeling only a mild II-III intensity tremor.

Seismic Activity and Aftershocks in Chupaca

The tremor in Arequipa coincides with ongoing seismic sequences in the central highlands, where Chupaca has logged nine aftershocks following a destructive 5.4 magnitude earthquake on July 18, 2026. According to the IGP, these secondary movements range between 3.4 and 3.7 in magnitude, with depths spanning 9 to 18 kilometers. The latest aftershock in the area hit on Thursday at 4:51 p.m., registering a 3.5 magnitude at a 12-kilometer depth with an II-III intensity in Chupaca, located at latitude -12.20 and longitude -75.28.

Specialists at the IGP explain that this persistent activity reflects a normal reajustment process along the Altos del Mantaro fault. Additional regional activity recorded by the IGP on July 22 included a 4.1 magnitude tremor near Ricardo Palma in Huarochirí, Lima, a 3.6 magnitude event south of Chupaca, a 3.5 magnitude shake southwest of the same locality, a 4.5 magnitude movement in Camaná, Arequipa, and a 4.5 magnitude shock off the coast of Samanco, Áncash.

Humanitarian Response and Emergency Measures in Junín

State agencies and regional authorities continue deploying heavy assistance to families impacted by the July 18 disaster in Chupaca and Huancayo. According to INDECI chief Luis Enrique Vásquez, speaking from the Centro de Operaciones de Emergencia Nacional (COEN), the initial 5.1 magnitude earthquake resulted in five deaths, 71 injuries with three individuals remaining hospitalized, 2.764 damnificados, and 1,346 affected persons.

Material losses include 407 destroyed homes, 738 uninhabited dwellings, and 505 structures suffering various degrees of damage. In response, the Executive declared a state of emergency across seven impacted districts to fast-track state assistance. INDECI has already distributed 30.80 tonnes of humanitarian relief and 11.23 tonnes of housing modules, supplemented by 19 tonnes from the Gobierno Regional de Junín, with officials planning to dispatch over 100 additional tonnes of goods on Friday.

Social Program Continuity and National Seismic Risks

Social programs under the Ministerio de Desarrollo e Inclusión Social—including Juntos, Pensión 65, Contigo, Cuna Más, Foncodes, PAE, and PCA—have deployed teams to monitor participants, deliver emotional backing, and maintain state services in Junín. These coordinated efforts have reached 674 damnificados, 329 affected individuals, and 68 injured residents.

Nationwide, the IGP notes that Peru’s primary seismic threat stems from the intense convergence of the Nazca and South American plates along the coast, particularly impacting Ica, Lima, Arequipa, and Tacna. Lima’s population of over ten million creates unique urban risk management hurdles, while Andean and jungle regions experience more superficial earthquakes that frequently trigger severe local destruction, as demonstrated in Chupaca.

Frequently Asked Questions

What caused the earthquake in Arequipa on July 23, 2026?
According to the IGP, the 3.5 magnitude earthquake occurred due to ongoing seismic activity in the region, striking 23 kilometers south of Vitor at a depth of 15 kilometers.

How many aftershocks have been recorded in Chupaca since July 18?
The IGP has documented nine aftershocks ranging from 3.4 to 3.7 in magnitude, driven by the natural reajustment of the Falla Alto del Mantaro.

What official casualties and damages were reported following the Chupaca earthquake?
INDECI reported five deaths, 71 injuries, 2.764 damnificados, 1,346 affected persons, 407 destroyed homes, 738 uninhabited houses, and 505 damaged dwellings.

How are communities responding to the ongoing tremors across Peru? Let us know your thoughts below.