A 7.4-magnitude earthquake [1] struck western Colombia on Monday, causing widespread building collapses and killing at least 111 people [3].

The disaster underscores the vulnerability of Pacific-coast infrastructure to deep tectonic events and complicates rescue efforts in remote regions.

The quake occurred at 12:34 UTC [4] on Aug. 10, which was 7:34 a.m. local time [5]. The epicentre was located near San José del Palmar in the Chocó Department [6]. Reports on the distance of the epicentre from Bogotá vary, with estimates ranging from 150 [1] to 250 miles [6] west of the capital.

Emergency responders said there was significant chaos on the streets of Bogotá and other urban centers. The tremor was powerful enough to be felt in neighboring Ecuador and Venezuela [2]. In the hardest-hit areas, residents were forced to evacuate as structures crumbled.

Fatality counts have fluctuated as rescue operations continue. While some early reports cited 69 deaths [2], the Associated Press said the toll has reached at least 111 [3]. Many people remain trapped in the rubble of collapsed buildings, according to rescue teams.

Seismologists said the event was triggered by a deep tectonic shift along the Pacific-coast fault system [6]. This geological activity is common in the region, but a magnitude of 7.4 is rare for this specific fault line.

Local authorities have initiated evacuations in high-risk zones to prevent further casualties from potential aftershocks. Search and rescue teams are prioritizing the Chocó Department, where the proximity to the epicentre caused the most severe structural damage.

A 7.4-magnitude earthquake struck western Colombia on Monday.

The scale of this earthquake highlights the critical need for updated seismic building codes in Colombia's western departments. Because the epicentre was located in the Chocó Department, a region often facing logistical and infrastructural challenges, the discrepancy in early death tolls suggests that communication gaps may hinder the speed of the emergency response.