Here are some of your emails and tweets:
I am in the La Reina/Las Condes area of Santiago. It's OK on our few streets - lasted about two minutes. It's 0430 now and roads mad with traffic and everyone out in streets fearing aftershocks.
Andy, Santiago
I live in Santiago, and I guess it woke the whole city up. The same goes for the centre-south part of the country.
Pablo Marambio, Santiago, Chile
No light, no telephone, no internet, but everything is okay at home
marcosko, Chile, via Twitter
I am a university professor that lives in Santiago. This is a massive earthquake since 1986 and the cities resisted well and communications by internet 3G are fine but not mobile phones yet. Santiago seems quiet with a brilliant moon.
Cristian Bonacic, Santiago
Things were certainly moving a bit, but no structural damage visible. Some fires could be seen in the distance. No electricity at the moment or phone lines, but apart from that, so far not so bad.
Mark Winstanley, Vina Del Mar, west of Santiago
We have also been shaken at this side of the Andes in Argentina. We could feel it for about one minute and again after 10 minutes. There was no panic but I guess this has been the strongest we have had in many years.
Diego, Mendoza, Argentina
I live in Mendoza and the earthquake was felt pretty strongly here. I am listening to the radio and it was felt in other provinces like San Luis , Neuquen and Cordaba too.
Graciela Martin, Mendoza, Argentina
Right here in Pergamino (200km north of Buenos Aires and about 1800km from Concepcion, Chile) we were at 0345 in the living room, when suddenly we started to see the very big lamp hanging from the ceiling started to move very fast making circles.
Enzo, Pergamino, Buenos Aires, Argentina
I am in the La Reina/Las Condes area of Santiago. It's OK on our few streets - lasted about two minutes. It's 0430 now and roads mad with traffic and everyone out in streets fearing aftershocks.
Andy, Santiago
I live in Santiago, and I guess it woke the whole city up. The same goes for the centre-south part of the country.
Pablo Marambio, Santiago, Chile
No light, no telephone, no internet, but everything is okay at home
marcosko, Chile, via Twitter
I am a university professor that lives in Santiago. This is a massive earthquake since 1986 and the cities resisted well and communications by internet 3G are fine but not mobile phones yet. Santiago seems quiet with a brilliant moon.
Cristian Bonacic, Santiago
Things were certainly moving a bit, but no structural damage visible. Some fires could be seen in the distance. No electricity at the moment or phone lines, but apart from that, so far not so bad.
Mark Winstanley, Vina Del Mar, west of Santiago
We have also been shaken at this side of the Andes in Argentina. We could feel it for about one minute and again after 10 minutes. There was no panic but I guess this has been the strongest we have had in many years.
Diego, Mendoza, Argentina
I live in Mendoza and the earthquake was felt pretty strongly here. I am listening to the radio and it was felt in other provinces like San Luis , Neuquen and Cordaba too.
Graciela Martin, Mendoza, Argentina
Right here in Pergamino (200km north of Buenos Aires and about 1800km from Concepcion, Chile) we were at 0345 in the living room, when suddenly we started to see the very big lamp hanging from the ceiling started to move very fast making circles.
Enzo, Pergamino, Buenos Aires, Argentina