| Magnitude | 5.7 |
| Alert | Strong |
| Depth | 33.0 km |
| Coordinates | -31.524, -67.596 |
| UTC time | 1977-12-21 03:47:32.500 |
Earthquake details
Wednesday, December 21, 1977 Earthquake
The earthquake hit Argentina on Wednesday, December 21, 1977 at 03:47 UTC with a magnitude of 5.7. The closest known location in the current dataset is Caucete (Argentina - AR), about 66.6 km away. The epicenter is located at longitude -67.596 and latitude -31.524.
| Location | San Juan |
| Country | Argentina (AR) |
| Severity | Strong |
Earthquake map 1977-12-21
Closest countries
The 12 closest cities near the epicenter.
| Caucete | 66.6 km |
| Santa Lucía | 85.6 km |
| Chimbas | 89.0 km |
| San Juan | 89.2 km |
| Pocito | 95.3 km |
| Mendoza | 191.3 km |
| San Martín | 192.2 km |
| San Luis | 230.0 km |
| La Rioja | 245.8 km |
| Chilecito | 263.1 km |
| Villa Carlos Paz | 295.1 km |
| Alta Gracia | 300.6 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
M 4.1
Caucete
Argentina · 2026-07-06 08:56 UTC
70.2 km
M 4.4
Santa Lucía
Argentina · 2026-06-28 03:12 UTC
36.2 km
M 5.0
San Luis
Argentina · 2026-06-05 06:54 UTC
69.7 km
M 4.3
San Juan
Argentina · 2026-05-31 22:18 UTC
83.2 km
M 4.5
San Luis
Argentina · 2026-04-17 02:38 UTC
77.6 km
M 4.6
San Luis
Argentina · 2026-03-10 08:51 UTC
75.0 km
M 5.1
San Luis
Argentina · 2026-03-07 17:13 UTC
68.3 km
M 4.3
San Juan
Argentina · 2026-01-22 19:40 UTC
80.4 km
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