World Strong 6.3 earthquake rattles Colombia, nearby aftershock registers 5.7, USGS says August 17, 2023 Natalie Neysa Alund, USA TODAY Comments Off on Strong 6.3 earthquake rattles Colombia, nearby aftershock registers 5.7, USGS says The notable quake registered a preliminary magnitude of 6.3, according to USGS, and was recorded about 9.9 miles north of the town of Cumaral.