The 1817 Santiago del Estero earthquake took place in the province of Santiago del Estero, Argentina, on 4 July at about 05:30 PM. It was estimated to be 7.0 on the Richter magnitude scale. Its epicenter was at -28°N -94°W, at a depth of 30 km.
The earthquake was felt with grade VIII in the Mercalli intensity scale in the provincial capital Santiago del Estero, where it caused grave damage.