| Magnitude | 5.3 |
| Alert | Strong |
| Depth | 33.0 km |
| Coordinates | -59.441, -25.928 |
| UTC time | 1977-09-12 22:39:58.100 |
Earthquake details
Monday, September 12, 1977 Earthquake
The earthquake hit South Sandwich Islands region on Monday, September 12, 1977 at 22:39 UTC with a magnitude of 5.3. The closest known location in the current dataset is Ushuaia, about 2566.2 km away. The epicenter is located at longitude -25.928 and latitude -59.441.
| Location | South Sandwich Islands region |
| Country | South Sandwich Islands region |
| Severity | Strong |
Earthquake map 1977-09-12
Closest countries
The 12 closest cities near the epicenter.
| Ushuaia | 2566.2 km |
| Río Grande | 2588.8 km |
| Río Gallegos | 2805.4 km |
| Punta Arenas | 2806.3 km |
| Caleta Olivia | 3074.3 km |
| Comodoro Rivadavia | 3117.6 km |
| Trelew | 3206.6 km |
| Puerto Madryn | 3232.1 km |
| Mar del Plata | 3271.8 km |
| Necochea | 3277.4 km |
| Viedma | 3290.4 km |
| Balcarce | 3319.6 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
M 5.0
South Sandwich Islands region
Unknown · 2026-09-27 21:13 UTC
42.6 km
M 5.1
South Sandwich Islands region
Unknown · 2026-09-12 00:55 UTC
66.2 km
M 4.9
South Sandwich Islands region
Unknown · 2026-08-23 17:23 UTC
85.9 km
M 5.4
South Sandwich Islands region
Unknown · 2026-08-21 13:06 UTC
74.8 km
M 4.9
South Sandwich Islands region
Unknown · 2026-07-24 00:37 UTC
80.4 km
M 4.9
South Sandwich Islands region
Unknown · 2026-07-21 08:53 UTC
46.8 km
M 4.8
South Sandwich Islands region
Unknown · 2026-07-18 16:57 UTC
17.8 km
M 4.6
South Sandwich Islands region
Unknown · 2026-07-17 18:24 UTC
34.7 km
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