A very deep earthquake registered by the EMSC at Magnitude 6.8 struck Northern Argentina at 22:09 UTC on January 20, 2023. The depth of the earthquake was reported as 586 km (364 miles).
The epicenter was located 24.3 km (15.1 miles) SW of Campo Gallo (population 5 455), and 120 km (74 miles) NNW of Quimili (population 10 959), Santiago del Estero, Argentina.
1,253 000 people are estimated to have felt weak shaking.
The USGS issued a Green alert for shaking-related fatalities and economic losses. There is a low likelihood of casualties and damage.
Overall, the population in this region resides in structures that are vulnerable to earthquake shaking, though resistant structures exist. The predominant vulnerable building types are adobe block with concrete bond beam and unreinforced brick with concrete floor construction.