| Magnitude | 5.4 |
| Alert | Strong |
| Depth | 33.0 km |
| Coordinates | -55.439, -26.469 |
| UTC time | 1991-12-28 02:20:28.170 |
Earthquake details
Saturday, December 28, 1991 Earthquake
The earthquake hit South Sandwich Islands region on Saturday, December 28, 1991 at 02:20 UTC with a magnitude of 5.4. The closest known location in the current dataset is Ushuaia, about 2624.1 km away. The epicenter is located at longitude -26.469 and latitude -55.439.
| Location | South Sandwich Islands region |
| Country | South Sandwich Islands region |
| Severity | Strong |
Earthquake map 1991-12-28
Closest countries
The 12 closest cities near the epicenter.
| Ushuaia | 2624.1 km |
| Río Grande | 2625.7 km |
| Río Gallegos | 2814.4 km |
| Punta Arenas | 2848.8 km |
| Caleta Olivia | 2997.3 km |
| Mar del Plata | 3022.0 km |
| Comodoro Rivadavia | 3033.0 km |
| Necochea | 3042.5 km |
| Trelew | 3073.7 km |
| Balcarce | 3074.6 km |
| Puerto Madryn | 3091.6 km |
| Viedma | 3112.7 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
97.6 km
M 5.0
South Sandwich Islands region
Unknown · 2026-09-04 06:45 UTC
81.7 km
M 5.0
South Sandwich Islands region
Unknown · 2026-07-29 10:30 UTC
74.3 km
M 4.6
South Sandwich Islands region
Unknown · 2026-07-12 15:15 UTC
51.1 km
M 4.5
South Sandwich Islands region
Unknown · 2026-07-03 01:53 UTC
92.9 km
M 4.6
South Sandwich Islands region
Unknown · 2026-07-03 01:49 UTC
81.5 km
M 4.9
South Sandwich Islands region
Unknown · 2026-06-30 15:15 UTC
80.2 km
M 4.6
South Sandwich Islands region
Unknown · 2026-06-30 01:33 UTC
38.4 km
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