1977 San Juan earthquake
| UTC time | 1977-11-23 09:26:26 |
|---|---|
| ISC event | 690743 |
| USGS-ANSS | ComCat |
| Local date | 23 November 1977 |
| Local time | 06:26:26 |
| Magnitude | 7.5 Mw, 7.4 Ms |
| Depth | 15 km (9.3 mi) |
| Epicenter | 31°07′08″S 67°50′20″W / 31.119°S 67.839°W |
| Type | Reverse |
| Max. intensity | MMI X (Extreme) |
| Casualties | 65 deaths |
The 1977 San Juan earthquake, also known as Caucete earthquake, took place in the province of San Juan, Argentina, on 23 November at 06:26:26 AM. It measured 7.5 on the moment magnitude scale, and had a maximum perceived intensity of X (Extreme) on the Mercalli intensity scale.
The earthquake caused fatalities and severe damage to buildings throughout the province, especially in the city of Caucete, where at least 65 people died. It also caused slight damage in the north of the Greater Mendoza metropolitan area. Its were felt as far away as Buenos Aires, where people were awakened that Wednesday by the tremor. People left their houses at dawn in panic at the Argentinian capital, located at 1,000 km (620 mi) to the east southeast.