A Huge Earthquake Hit Colombia — Here's What Happened and Why It Matters

A powerful earthquake struck western Colombia on Monday, 10 August. It killed at least 21 people and caused buildings to collapse in several areas, including the city of Cali and the coastal region of Chocó (Reuters). Colombia's National Geological Service called it the worst earthquake to hit the country in this century (BBC).

An earthquake's strength is measured on a scale called magnitude. A 7.4 is considered very serious — strong enough to destroy buildings and reshape the ground. This one hit hard.

The worst damage was in Cali, Colombia's third-largest city. A residential tower called Torres del Limonar collapsed completely. Rescue workers have been digging through the unstable rubble, searching for anyone who might still be alive underneath (BBC). Among those waiting for news is Carlos Aponte, a Colombian journalist who has been searching the rubble of Torres del Limonar for his parents and niece, who were inside when the building came down (Reuters).

Rescue teams are still holding out hope, even as the hours stretch on. One rescuer, identified as Velasco, pointed to past disasters where people were found alive after seven days under rubble. That is why teams do not give up on a site until they are certain no one could still be living (BBC). Volunteers have joined the effort. Alejandro Mahecha, a 19-year-old, came to the Torres del Limonar site to help after the earthquake affected his city (BBC).

The damage was not limited to Cali. Chocó, a rural coastal region in northwestern Colombia, also suffered destruction and deaths. The geographic spread — from a big city to a remote coastal area — shows how far the earthquake's reach extended (BBC).

Colombia is no stranger to earthquakes. The country sits along the eastern edge of what is called the Pacific Ring of Fire, a zone around the Pacific Ocean where earthquakes and volcanic eruptions happen frequently. Here is why: the Earth's surface is made up of large puzzle pieces called tectonic plates. In Colombia, one of these plates (the Nazca Plate, under the ocean) is slowly sliding beneath another (the South American Plate). When that movement builds up enough pressure, it releases suddenly, and that release is what we feel as an earthquake.

The collapse of Torres del Limonar is likely to raise questions. When one building falls and the ones around it stay standing, people ask whether it was built correctly and whether the rules meant to make buildings earthquake-safe were actually followed. In earthquake-prone countries, building codes are the rules that engineers follow to make sure structures can survive shaking. How those rules are written and how well they are enforced in practice are two different things, and the gap between them may come under scrutiny.

Rescue teams are working in dangerous conditions. After a major earthquake, smaller tremors called aftershocks often follow, and these can shake already-damaged buildings further, making the rubble more dangerous with each passing hour.

The confirmed death toll of at least 21 is a figure that may change. In major earthquakes, early casualty numbers usually rise as rescue teams reach more areas and communication improves. This is especially true in rural regions like parts of Chocó, where roads and phone service may be limited.

The broader context here is one of scale and response. A 7.4-magnitude earthquake affecting both a densely populated city and a rural coastal region at the same time puts Colombia's disaster-response system to the test on two very different fronts. Cali's emergency services are focused on a high-profile building collapse with trapped civilians and a journalist's family among them. Chocó, with its thinner infrastructure and more dispersed population, presents a different challenge — one where reaching affected communities may take longer and where the full extent of damage may not yet be reflected in the current toll.

What comes next depends on two timelines running in parallel. The first is measured in hours: how many survivors rescuers can pull from Torres del Limonar and other collapsed structures before the window closes. The second is measured in weeks and months: whether the post-disaster review examines not just the immediate response but the building standards and regulations that allowed a structure like Torres del Limonar to fail. Colombia has the geological reality and the institutions for both. Whether the political will exists to act on what those institutions find is a separate question entirely.