| Magnitude | 6.6 |
| Alert | Severe |
| Depth | 10.0 km |
| Coordinates | -56.102, -24.614 |
| UTC time | 1991-12-28 00:52:10.160 |
Earthquake details
Saturday, December 28, 1991 Earthquake
The earthquake hit South Sandwich Islands region on Saturday, December 28, 1991 at 00:52 UTC with a magnitude of 6.6. The closest known location in the current dataset is Ushuaia, about 2715.9 km away. The epicenter is located at longitude -24.614 and latitude -56.102.
| Location | South Sandwich Islands region |
| Country | South Sandwich Islands region |
| Severity | Severe |
Earthquake map 1991-12-28
Closest countries
The 12 closest cities near the epicenter.
| Ushuaia | 2715.9 km |
| Río Grande | 2722.2 km |
| Río Gallegos | 2917.2 km |
| Punta Arenas | 2944.6 km |
| Caleta Olivia | 3115.9 km |
| Comodoro Rivadavia | 3152.8 km |
| Mar del Plata | 3158.8 km |
| Necochea | 3178.6 km |
| Trelew | 3200.4 km |
| Balcarce | 3211.2 km |
| Puerto Madryn | 3219.3 km |
| Viedma | 3244.4 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
M 5.0
South Sandwich Islands region
Unknown · 2026-09-21 21:37 UTC
56.5 km
M 5.0
South Sandwich Islands region
Unknown · 2026-09-04 06:45 UTC
96.2 km
M 4.6
South Sandwich Islands region
Unknown · 2026-06-19 03:50 UTC
67.6 km
M 4.4
South Sandwich Islands region
Unknown · 2026-06-17 20:06 UTC
67.0 km
M 5.0
South Sandwich Islands region
Unknown · 2026-06-17 19:48 UTC
94.5 km
M 4.3
South Sandwich Islands region
Unknown · 2026-06-16 19:27 UTC
94.3 km
M 4.4
South Sandwich Islands region
Unknown · 2026-06-16 13:51 UTC
94.5 km
M 4.6
South Sandwich Islands region
Unknown · 2026-06-16 13:36 UTC
90.8 km
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