| Magnitude | 5.5 |
| Alert | Strong |
| Depth | 33.0 km |
| Coordinates | -56.864, -24.973 |
| UTC time | 1984-10-21 09:12:59.830 |
Earthquake details
Sunday, October 21, 1984 Earthquake
The earthquake hit South Sandwich Islands region on Sunday, October 21, 1984 at 09:12 UTC with a magnitude of 5.5. The closest known location in the current dataset is Ushuaia, about 2673.3 km away. The epicenter is located at longitude -24.973 and latitude -56.864.
| Location | South Sandwich Islands region |
| Country | South Sandwich Islands region |
| Severity | Strong |
Earthquake map 1984-10-21
Closest countries
The 12 closest cities near the epicenter.
| Ushuaia | 2673.3 km |
| Río Grande | 2683.1 km |
| Río Gallegos | 2883.1 km |
| Punta Arenas | 2904.8 km |
| Caleta Olivia | 3097.8 km |
| Comodoro Rivadavia | 3136.3 km |
| Mar del Plata | 3176.9 km |
| Necochea | 3193.3 km |
| Trelew | 3193.3 km |
| Puerto Madryn | 3213.8 km |
| Balcarce | 3228.3 km |
| Viedma | 3246.7 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
M 4.9
South Sandwich Islands region
Unknown · 2026-09-28 04:41 UTC
90.3 km
M 5.1
South Sandwich Islands region
Unknown · 2026-09-28 03:43 UTC
91.5 km
M 5.0
South Sandwich Islands region
Unknown · 2026-09-21 21:37 UTC
75.9 km
M 4.9
South Sandwich Islands region
Unknown · 2026-08-29 07:10 UTC
82.4 km
M 4.8
South Sandwich Islands region
Unknown · 2026-07-14 15:25 UTC
30.0 km
M 4.3
South Sandwich Islands region
Unknown · 2026-06-24 10:17 UTC
74.2 km
M 4.6
South Sandwich Islands region
Unknown · 2026-06-19 03:50 UTC
72.9 km
M 5.0
South Sandwich Islands region
Unknown · 2026-04-23 05:30 UTC
38.4 km
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