| Magnitude | 5.3 |
| Alert | Strong |
| Depth | 33.0 km |
| Coordinates | -56.009, -27.118 |
| UTC time | 1977-05-20 22:51:43.500 |
Earthquake details
Friday, May 20, 1977 Earthquake
The earthquake hit South Sandwich Islands region on Friday, May 20, 1977 at 22:51 UTC with a magnitude of 5.3. The closest known location in the current dataset is Ushuaia, about 2568.2 km away. The epicenter is located at longitude -27.118 and latitude -56.009.
| Location | South Sandwich Islands region |
| Country | South Sandwich Islands region |
| Severity | Strong |
Earthquake map 1977-05-20
Closest countries
The 12 closest cities near the epicenter.
| Ushuaia | 2568.2 km |
| Río Grande | 2572.3 km |
| Río Gallegos | 2764.7 km |
| Punta Arenas | 2795.0 km |
| Caleta Olivia | 2960.0 km |
| Comodoro Rivadavia | 2996.9 km |
| Mar del Plata | 3015.6 km |
| Necochea | 3033.1 km |
| Trelew | 3045.4 km |
| Puerto Madryn | 3064.6 km |
| Balcarce | 3067.3 km |
| Viedma | 3092.3 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
M 5.0
South Sandwich Islands region
Unknown · 2026-09-19 09:59 UTC
75.3 km
M 4.9
South Sandwich Islands region
Unknown · 2026-09-12 11:05 UTC
39.7 km
M 5.0
South Sandwich Islands region
Unknown · 2026-09-04 06:45 UTC
61.4 km
M 6.2
South Sandwich Islands region
Unknown · 2026-09-02 23:46 UTC
53.7 km
M 5.2
South Sandwich Islands region
Unknown · 2026-09-02 10:54 UTC
45.1 km
M 4.4
South Sandwich Islands region
Unknown · 2026-08-31 21:46 UTC
60.1 km
M 5.1
South Sandwich Islands region
Unknown · 2026-08-30 03:55 UTC
50.4 km
M 5.0
South Sandwich Islands region
Unknown · 2026-07-29 10:30 UTC
21.2 km
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