| Magnitude | 5.3 |
| Alert | Strong |
| Depth | 120.0 km |
| Coordinates | -55.902, -27.907 |
| UTC time | 1977-08-22 21:51:00.400 |
Earthquake details
Monday, August 22, 1977 Earthquake
The earthquake hit South Sandwich Islands region on Monday, August 22, 1977 at 21:51 UTC with a magnitude of 5.3. The closest known location in the current dataset is Ushuaia, about 2523.5 km away. The epicenter is located at longitude -27.907 and latitude -55.902.
| Location | South Sandwich Islands region |
| Country | South Sandwich Islands region |
| Severity | Strong |
Earthquake map 1977-08-22
Closest countries
The 12 closest cities near the epicenter.
| Ushuaia | 2523.5 km |
| Río Grande | 2526.5 km |
| Río Gallegos | 2717.5 km |
| Punta Arenas | 2749.4 km |
| Caleta Olivia | 2910.1 km |
| Comodoro Rivadavia | 2946.8 km |
| Mar del Plata | 2966.9 km |
| Necochea | 2983.8 km |
| Trelew | 2994.8 km |
| Puerto Madryn | 3014.1 km |
| Balcarce | 3018.4 km |
| Viedma | 3041.9 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
M 4.8
South Sandwich Islands region
Unknown · 2026-09-29 06:38 UTC
79.9 km
M 4.8
South Sandwich Islands region
Unknown · 2026-09-29 04:16 UTC
67.9 km
M 5.0
South Sandwich Islands region
Unknown · 2026-09-19 09:59 UTC
33.3 km
M 4.9
South Sandwich Islands region
Unknown · 2026-09-12 11:05 UTC
84.4 km
M 6.2
South Sandwich Islands region
Unknown · 2026-09-02 23:46 UTC
33.8 km
M 5.2
South Sandwich Islands region
Unknown · 2026-09-02 10:54 UTC
83.0 km
M 4.4
South Sandwich Islands region
Unknown · 2026-08-31 21:46 UTC
22.9 km
M 5.1
South Sandwich Islands region
Unknown · 2026-08-30 03:55 UTC
83.3 km
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