| Magnitude | 5.4 |
| Alert | Strong |
| Depth | 33.0 km |
| Coordinates | -59.465, -24.682 |
| UTC time | 1977-02-23 19:47:05.500 |
Earthquake details
Wednesday, February 23, 1977 Earthquake
The earthquake hit South Sandwich Islands region on Wednesday, February 23, 1977 at 19:47 UTC with a magnitude of 5.4. The closest known location in the current dataset is Ushuaia, about 2635.7 km away. The epicenter is located at longitude -24.682 and latitude -59.465.
| Location | South Sandwich Islands region |
| Country | South Sandwich Islands region |
| Severity | Strong |
Earthquake map 1977-02-23
Closest countries
The 12 closest cities near the epicenter.
| Ushuaia | 2635.7 km |
| Río Grande | 2658.8 km |
| Río Gallegos | 2875.8 km |
| Punta Arenas | 2876.2 km |
| Caleta Olivia | 3144.3 km |
| Comodoro Rivadavia | 3187.6 km |
| Trelew | 3275.1 km |
| Puerto Madryn | 3300.3 km |
| Mar del Plata | 3333.1 km |
| Necochea | 3340.0 km |
| Viedma | 3356.9 km |
| Balcarce | 3381.4 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
82.4 km
M 5.1
South Sandwich Islands region
Unknown · 2026-09-12 00:55 UTC
39.3 km
M 4.9
South Sandwich Islands region
Unknown · 2026-08-23 17:23 UTC
86.4 km
M 4.8
South Sandwich Islands region
Unknown · 2026-07-28 21:32 UTC
84.7 km
M 4.9
South Sandwich Islands region
Unknown · 2026-07-24 00:37 UTC
82.4 km
M 4.9
South Sandwich Islands region
Unknown · 2026-07-21 08:53 UTC
98.8 km
M 4.8
South Sandwich Islands region
Unknown · 2026-07-18 16:57 UTC
88.3 km
M 4.6
South Sandwich Islands region
Unknown · 2026-07-17 18:24 UTC
95.3 km
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