| Magnitude | 6.1 |
| Alert | Severe |
| Depth | 112.0 km |
| Coordinates | -56.013, -27.788 |
| UTC time | 1977-08-04 01:11:11.300 |
Earthquake details
Thursday, August 4, 1977 Earthquake
The earthquake hit South Sandwich Islands region on Thursday, August 4, 1977 at 01:11 UTC with a magnitude of 6.1. The closest known location in the current dataset is Ushuaia, about 2527.7 km away. The epicenter is located at longitude -27.788 and latitude -56.013.
| Location | South Sandwich Islands region |
| Country | South Sandwich Islands region |
| Severity | Severe |
Earthquake map 1977-08-04
Closest countries
The 12 closest cities near the epicenter.
| Ushuaia | 2527.7 km |
| Río Grande | 2531.3 km |
| Río Gallegos | 2723.3 km |
| Punta Arenas | 2754.1 km |
| Caleta Olivia | 2918.4 km |
| Comodoro Rivadavia | 2955.4 km |
| Mar del Plata | 2979.5 km |
| Necochea | 2996.1 km |
| Trelew | 3004.7 km |
| Puerto Madryn | 3024.1 km |
| Balcarce | 3030.9 km |
| Viedma | 3052.8 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
M 4.8
South Sandwich Islands region
Unknown · 2026-09-29 06:38 UTC
94.3 km
M 4.8
South Sandwich Islands region
Unknown · 2026-09-29 04:16 UTC
81.9 km
M 5.0
South Sandwich Islands region
Unknown · 2026-09-19 09:59 UTC
47.6 km
M 4.9
South Sandwich Islands region
Unknown · 2026-09-12 11:05 UTC
71.8 km
M 6.2
South Sandwich Islands region
Unknown · 2026-09-02 23:46 UTC
22.7 km
M 5.2
South Sandwich Islands region
Unknown · 2026-09-02 10:54 UTC
69.4 km
M 4.4
South Sandwich Islands region
Unknown · 2026-08-31 21:46 UTC
19.6 km
M 5.1
South Sandwich Islands region
Unknown · 2026-08-30 03:55 UTC
69.2 km
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