| Magnitude | 5.1 |
| Alert | Strong |
| Depth | 33.0 km |
| Coordinates | -55.555, -26.369 |
| UTC time | 1977-09-25 15:39:08.800 |
Earthquake details
Sunday, September 25, 1977 Earthquake
The earthquake hit South Sandwich Islands region on Sunday, September 25, 1977 at 15:39 UTC with a magnitude of 5.1. The closest known location in the current dataset is Ushuaia, about 2626.6 km away. The epicenter is located at longitude -26.369 and latitude -55.555.
| Location | South Sandwich Islands region |
| Country | South Sandwich Islands region |
| Severity | Strong |
Earthquake map 1977-09-25
Closest countries
The 12 closest cities near the epicenter.
| Ushuaia | 2626.6 km |
| Río Grande | 2628.9 km |
| Río Gallegos | 2818.5 km |
| Punta Arenas | 2851.9 km |
| Caleta Olivia | 3004.1 km |
| Mar del Plata | 3033.4 km |
| Comodoro Rivadavia | 3040.0 km |
| Necochea | 3053.6 km |
| Trelew | 3082.1 km |
| Balcarce | 3086.0 km |
| Puerto Madryn | 3100.3 km |
| Viedma | 3122.3 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
M 4.9
South Sandwich Islands region
Unknown · 2026-09-12 11:05 UTC
86.4 km
M 5.0
South Sandwich Islands region
Unknown · 2026-09-04 06:45 UTC
67.8 km
M 5.2
South Sandwich Islands region
Unknown · 2026-09-02 10:54 UTC
99.3 km
M 5.0
South Sandwich Islands region
Unknown · 2026-07-29 10:30 UTC
71.8 km
M 4.6
South Sandwich Islands region
Unknown · 2026-07-12 15:15 UTC
44.9 km
M 4.5
South Sandwich Islands region
Unknown · 2026-07-03 01:53 UTC
89.5 km
M 4.6
South Sandwich Islands region
Unknown · 2026-07-03 01:49 UTC
78.1 km
M 4.9
South Sandwich Islands region
Unknown · 2026-06-30 15:15 UTC
72.7 km
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