| Magnitude | 5.6 |
| Alert | Strong |
| Depth | 10.0 km |
| Coordinates | -31.271, -67.773 |
| UTC time | 1978-08-21 00:28:22.700 |
Earthquake details
Monday, August 21, 1978 Earthquake
The earthquake hit Argentina on Monday, August 21, 1978 at 00:28 UTC with a magnitude of 5.6. The closest known location in the current dataset is Caucete (Argentina - AR), about 64.3 km away. The epicenter is located at longitude -67.773 and latitude -31.271.
| Location | San Juan |
| Country | Argentina (AR) |
| Severity | Strong |
Earthquake map 1978-08-21
Closest countries
The 12 closest cities near the epicenter.
| Caucete | 64.3 km |
| Santa Lucía | 75.1 km |
| Chimbas | 76.3 km |
| San Juan | 78.4 km |
| Pocito | 89.6 km |
| Mendoza | 205.9 km |
| San Martín | 212.3 km |
| La Rioja | 225.2 km |
| Chilecito | 236.3 km |
| San Luis | 262.8 km |
| Villa Carlos Paz | 312.5 km |
| Los Andes | 318.3 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
M 4.1
Caucete
Argentina · 2026-07-06 08:56 UTC
75.3 km
M 4.4
Santa Lucía
Argentina · 2026-06-28 03:12 UTC
34.7 km
M 5.0
San Luis
Argentina · 2026-06-05 06:54 UTC
99.7 km
M 4.3
San Juan
Argentina · 2026-05-31 22:18 UTC
60.0 km
M 4.5
San Luis
Argentina · 2026-04-17 02:38 UTC
99.5 km
M 4.6
San Luis
Argentina · 2026-03-10 08:51 UTC
97.1 km
M 5.1
San Luis
Argentina · 2026-03-07 17:13 UTC
91.1 km
M 4.3
San Juan
Argentina · 2026-02-28 23:05 UTC
97.7 km
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