Medium intensity earthquake affects the Coquimbo Region

A moderate earthquake struck the Coquimbo Region of Chile late on Tuesday night, according to reports from the National Seismological Center (CSN) at the University of Chile. The tremor registered at magnitude 5.1 and occurred at 11:09 PM local time. Its epicenter was located 16 kilometers southwest of Punitaqui, within the Limarí Province. The hypocenter—the point beneath the Earth's surface where the earthquake originated—was recorded at a depth of 49 kilometers. This placed the quake in the upper crust of the Earth, which typically results in more noticeable shaking at the surface compared to deeper quakes.

The seismic event was felt across several regions of northern Chile, stretching from Antofagasta in the north down to Coquimbo. In Antofagasta, the earthquake reached intensity level III on the Modified Mercalli Intensity Scale, which indicates that the shaking was strong enough to be noticed by many people, although few would experience difficulty standing. In the Atacama Region, specifically in the city of Vallenar, the quake was also perceived as a III on the scale. Moving southward into the Coquimbo Region, the effects were more pronounced. In Monte Patria, the intensity reached level V, meaning that objects fell off shelves, furniture moved, and some minor damage could occur. In nearby towns such as Canela, Río Hurtado, Andacollo, and Punitaqui, the earthquake was measured at intensity IV, which can cause items to fall from cabinets and slight cracks in walls.

Further south, in cities like La Serena, Salamanca, Vicuña, Ovalle, Illapel, and Coquimbo itself, the quake was felt at intensity III, causing noticeable shaking but generally no significant structural damage. Even further south, in La Higuera, the intensity dropped to level II, where the movement was barely perceptible to most people, often only detected by sensitive instruments or those very close to the epicenter.

This earthquake adds to a pattern of seismic activity along Chile’s long and active fault lines. While the country experiences frequent smaller tremors due to its location along the boundary between the Nazca and South American tectonic plates, this particular event stands out because it occurred during a period of relative calm in the central part of the country. According to a geophysicist quoted in La Tercera, the unusual quiet in Santiago and surrounding areas has raised questions about whether the region might be entering a new phase of seismic behavior. However, experts emphasize that each earthquake is unique and does not necessarily indicate a larger event is imminent.

Residents in affected areas reported feeling the ground shake under their feet, with some describing a rolling sensation that lasted for several seconds. No major infrastructure damage or injuries have been reported so far, though authorities remain vigilant and have advised residents to stay alert for potential aftershocks. Emergency services confirmed they received no calls related to the earthquake, suggesting that the impact was largely limited to the perception of the shaking rather than physical destruction.

In the coming days, scientists will continue monitoring seismic activity in the area to assess whether this quake is part of a broader trend or an isolated incident. The CSN has already begun analyzing data to determine if there are any implications for future seismic events in the region. Meanwhile, local communities are being reminded of preparedness measures, including having emergency kits ready and knowing evacuation routes should stronger tremors occur. As always, the focus remains on ensuring public safety and minimizing risks associated with natural disasters in one of the world’s most seismically active countries.