Quake strikes west-central San Juan province at a depth of 10 km, says GFZ German Research Center for Geosciences.
An earthquake of magnitude 6.8 has struck Argentina's San Juan province, the GFZ German Research Center for Geosciences said.
The quake hit the west-central province late on Monday at a depth of 10 km, GFZ said.
The US Tsunami Warning System said no tsunami warning has been issued for the earthquake. The quake was also felt in the provin ces of Mendoza, Cordoba, Santa Fe, La Rioja and Buenos Aires.
There were no immediate reports of serious damages or victims.
The US Geological Survey said the quake had a preliminary magnitude of 6.4 and its epicentre was 27.6 km southwest of the town of Porcito.
The quake was followed by a magnitude 5.0 aftershock about a quarter hour later, the USGS said.
"Many neighbours came down from the buildings and houses, went out into the street. The water in the pool moved like the sea," Ricardo, a resident of Mendoza city, told local newspaper Clarin.
"Um forte terremoto de magnitude 6,8 foi registrado na província de SanJuan,Argentina.A uma profundidade de 10 KM. Ele sismo também senti em Chile central..." American Earthquakes Terremoto em Cordoba/ Argentina. Pelos padrões chilenos é normal, tremores de 6.0 a 8.8. pic.twitter.com/oTW7jgPclZ— Suzy Guerreira (@SuzanaToohey) January 19, 2021
Posts on social media showed many homes and buildings shaking, with the seismic activity leaving cracks in roads, while glass bottles fell off the shelves in shops.
San Juan Governor Sergio Uñac urged people to remain calm following the earthquake and called on them to reach out in case they need any assistance.
Quake shakes Chile
Strong movement was felt in Chile's capital, Santiago, which is about 300 kilometres from the area hit by the quake.
Chilean officials said there was no damage reported in that nation.
Media in Argentina said electricity failed in the region around Porcito and some goods were shaken from supermarket shelves.