It was horrible," Juan Carlos Osorio told Caracol Television as he helped remove debris from a collapsed structure in Cali. Colombia's civil aviation authority said flights were suspended at airports in Pereira, Manizales, Quibdo, Armenia, Cartago and Buenaventura while inspectors checked for structural damage. "This one was far below the (earth's) crust, and in theory, it shouldn't cause as much shaking. "A magnitude 7.4 is about 32 times as powerful as a magnitude 6.4." Cities in the country's coffee region, including Armenia and Pereira, suffered a devastating 6.2 magnitude quake in 1999, which killed more than 1,000 people.