| Magnitude | 5.4 |
| Alert | Strong |
| Depth | 33.0 km |
| Coordinates | -56.531, -25.389 |
| UTC time | 1977-12-16 07:29:23.700 |
Earthquake details
Friday, December 16, 1977 Earthquake
The earthquake hit South Sandwich Islands region on Friday, December 16, 1977 at 07:29 UTC with a magnitude of 5.4. The closest known location in the current dataset is Ushuaia, about 2657.5 km away. The epicenter is located at longitude -25.389 and latitude -56.531.
| Location | South Sandwich Islands region |
| Country | South Sandwich Islands region |
| Severity | Strong |
Earthquake map 1977-12-16
Closest countries
The 12 closest cities near the epicenter.
| Ushuaia | 2657.5 km |
| Río Grande | 2665.4 km |
| Río Gallegos | 2862.8 km |
| Punta Arenas | 2887.5 km |
| Caleta Olivia | 3070.2 km |
| Comodoro Rivadavia | 3108.1 km |
| Mar del Plata | 3137.3 km |
| Necochea | 3154.6 km |
| Trelew | 3161.4 km |
| Puerto Madryn | 3181.3 km |
| Balcarce | 3188.9 km |
| Viedma | 3211.6 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
87.5 km
M 4.9
South Sandwich Islands region
Unknown · 2026-09-12 11:05 UTC
87.6 km
M 5.0
South Sandwich Islands region
Unknown · 2026-09-04 06:45 UTC
63.5 km
M 5.2
South Sandwich Islands region
Unknown · 2026-09-02 10:54 UTC
94.3 km
M 5.1
South Sandwich Islands region
Unknown · 2026-08-30 03:55 UTC
99.4 km
M 4.8
South Sandwich Islands region
Unknown · 2026-07-14 15:25 UTC
74.3 km
M 4.6
South Sandwich Islands region
Unknown · 2026-06-19 03:50 UTC
28.0 km
M 4.4
South Sandwich Islands region
Unknown · 2026-06-17 20:06 UTC
74.8 km
Stay informed
Earthquake alerts
Create targeted notifications for important seismic activity near the places you follow.