Cochabamba faces an increase in earthquakes and vulnerability in building infrastructure.

The San Calixto Observatory has reported an average of 18 surface earthquakes per month in Cochabamba, a figure that, while it may seem alarming, generally goes unnoticed by the population. However, the recent increase in seismic activity has raised concerns among citizens, who fear for the safety of their homes and the region's infrastructure. This situation highlights Cochabamba's vulnerability, where only 20 percent of buildings possess seismic-resistant features. Gonzalo Fernández, director of the Observatory, explained that earthquakes are the result of energy accumulation in geological faults and that, although most are microseisms that are not felt, monitoring them is crucial. "We cannot predict exactly when a major earthquake will occur, but we can observe activity patterns that help us better understand the situation," he stated. Most of the recorded tremors have magnitudes below three, making them imperceptible to the population, but they are part of a broader phenomenon. Residents' anxiety intensifies upon learning that Cochabamba houses several active geological faults. Ramiro López, head of the Risk Management Unit of the Governor's Office, highlighted the installation of 11 microsensors at strategic points in the region to collect data on seismic activity. "These devices are essential for anticipating and responding to any eventuality," he added. To date, more than 100 seismic movements have been recorded this year, the most recent with a magnitude of 4.6, prompting authorities to reassess their response capacity to these phenomena. Despite the fact that microseisms allow for a gradual release of tension, López emphasized that the region's infrastructure remains a fundamental concern. "We are vulnerable," he admitted, noting that only a small fraction of buildings have been designed and constructed to withstand an earthquake. Urban architect Javier Molina has also expressed concern, mentioning that many builders tend to ignore seismic-resistant standards to cut costs, which increases risk in the event of a significant seismic event. Estela Minaya, a seismicity expert from the Bolivian Geological Society, explained that seismic activity in Cochabamba is constant and does not follow a clear pattern of increase. According to her analysis, seismicity in the region is linked to the subduction process of the Nazca and South American tectonic plates, as well as to the dynamics of crustal deformation. "The active faults in Cochabamba are short and oriented from east to west, which may facilitate the occurrence of earthquakes," she detailed. Although the probability of a major earthquake is considered low, concern persists. Gonzalo Maldonado, from the Association of Emeritus Engineers, observed that the city is not designed to withstand significant seismic movements. However, he highlighted that there are methodologies to reinforce structures, which could improve building safety. Mijail Mercado, the Planning Secretary of Cercado, referred to Municipal Law 1184, which requires all new buildings to meet seismic requirements. He announced that inspections will be carried out to verify compliance with the regulations. This reflects an effort by local authorities to enhance the resilience of infrastructure against earthquakes. Samuel Pereira, coordinator of the Ministry of Defense, recalled the devastating earthquake of 1998, which left a deep mark on the collective memory of the affected communities. However, he emphasized that his goal is not to frighten the population but rather to promote a culture of prevention and training. "Cochabamba and Bolivia have been reporting earthquakes for decades, so it is important for the population to be prepared," he stated. In response to the growing concerns of citizens, the Governor's Office and the Municipality of Cochabamba have announced the implementation of drills and training in various educational institutions and hospitals. These activities, scheduled to begin next week, aim to prepare the population to act appropriately in the event of a seismic event, thus promoting greater awareness and response capacity to the seismic reality of the region. Preparedness and education are key tools for facing the unexpected, and it is essential for the community to be informed and ready to react.