Chile: A magnitude-5.7 offshore earthquake occurs near Antofagasta region at around 12:21 Dec. 21

A magnitude-5.7 offshore earthquake occurred west of Antofagasta Region, in Northern Chile, at around 12:21 Dec. 21. The epicenter was about 22 km (14 miles) north-northwest of Tocopilla and 152 km (95 miles) west-northwest of Calama. The tremor occurred at a depth of about 55 km (34 miles), and light-to-moderate shaking was probably felt throughout Antofagasta and Tarapaca regions of Chile, and parts of southwestern Bolivia. There have been no initial reports of damage or casualties as a result of the earthquake; however, significant damage is unlikely. It could take several hours until authorities can conduct comprehensive damage assessments, especially in remote areas. Moderate aftershocks are likely over the coming days. The event has not prompted any tsunami advisories.

Officials may temporarily shut down transportation infrastructure in the tremor zone to check for damage. Minor disruptions could occur during shutdowns, but service will likely resume quickly if no damage is found. Utility outages are possible, particularly near the earthquake's epicenter.