Earthquakes in Cúcuta: Living Near the Bucaramanga Nest

Yes, Cúcuta is a very high earthquake-risk zone, one of the most exposed in Colombia. The city sits on the country's northeastern border, near the frontal fault of the Cordillera Oriental and under the influence of the Bucaramanga Nest, one of the most active intermediate-depth seismicity clusters on the planet. Colombia's Earthquake-Resistant Construction Code (NSR-10) classifies Cúcuta and its metropolitan area as a high seismic-hazard zone.

The geological context stems from the convergence of three plates: South American, Nazca and Caribbean. Tectonic shortening of the northern Andes concentrates enormous stress in northeastern Colombia and neighbouring Venezuela, home to the Boconó fault. At depths of 140 to 160 kilometres, the Bucaramanga Nest generates earthquakes almost continuously, which, though deep, are frequently felt across the whole Norte de Santander region.

The gravest historical episode was the earthquake of 18 May 1875, known as the Cúcuta or Andes earthquake, with an estimated magnitude near 6.8. It completely destroyed the city and numerous towns on both sides of the border, killing thousands. It was so devastating that Cúcuta had to be rebuilt along a new urban layout. That precedent, combined with the Nest's ongoing activity, makes strict compliance with seismic-resistant codes essential for any new building.