| Magnitude | 5.1 |
| Alert | Strong |
| Depth | 33.0 km |
| Coordinates | -55.789, -25.793 |
| UTC time | 1975-04-28 16:45:30.800 |
Earthquake details
Monday, April 28, 1975 Earthquake
The earthquake hit South Sandwich Islands region on Monday, April 28, 1975 at 16:45 UTC with a magnitude of 5.1. The closest known location in the current dataset is Ushuaia, about 2654.4 km away. The epicenter is located at longitude -25.793 and latitude -55.789.
| Location | South Sandwich Islands region |
| Country | South Sandwich Islands region |
| Severity | Strong |
Earthquake map 1975-04-28
Closest countries
The 12 closest cities near the epicenter.
| Ushuaia | 2654.4 km |
| Río Grande | 2658.3 km |
| Río Gallegos | 2850.1 km |
| Punta Arenas | 2881.1 km |
| Caleta Olivia | 3041.3 km |
| Mar del Plata | 3077.5 km |
| Comodoro Rivadavia | 3077.6 km |
| Necochea | 3097.3 km |
| Trelew | 3122.1 km |
| Balcarce | 3129.9 km |
| Puerto Madryn | 3140.7 km |
| Viedma | 3164.3 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
82.5 km
M 5.0
South Sandwich Islands region
Unknown · 2026-09-04 06:45 UTC
46.6 km
M 5.2
South Sandwich Islands region
Unknown · 2026-09-02 10:54 UTC
96.5 km
M 5.0
South Sandwich Islands region
Unknown · 2026-07-29 10:30 UTC
98.6 km
M 4.6
South Sandwich Islands region
Unknown · 2026-07-12 15:15 UTC
68.7 km
M 4.9
South Sandwich Islands region
Unknown · 2026-06-30 15:15 UTC
85.9 km
M 4.6
South Sandwich Islands region
Unknown · 2026-06-30 01:33 UTC
84.6 km
M 5.1
South Sandwich Islands region
Unknown · 2026-06-30 00:15 UTC
94.7 km
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