| Magnitude | 5.1 |
| Alert | Strong |
| Depth | 33.0 km |
| Coordinates | -55.483, -28.962 |
| UTC time | 1991-09-21 01:46:47.370 |
Earthquake details
Saturday, September 21, 1991 Earthquake
The earthquake hit South Sandwich Islands region on Saturday, September 21, 1991 at 01:46 UTC with a magnitude of 5.1. The closest known location in the current dataset is Ushuaia, about 2471.0 km away. The epicenter is located at longitude -28.962 and latitude -55.483.
| Location | South Sandwich Islands region |
| Country | South Sandwich Islands region |
| Severity | Strong |
Earthquake map 1991-09-21
Closest countries
The 12 closest cities near the epicenter.
| Ushuaia | 2471.0 km |
| Río Grande | 2471.1 km |
| Río Gallegos | 2658.0 km |
| Punta Arenas | 2694.3 km |
| Caleta Olivia | 2840.5 km |
| Comodoro Rivadavia | 2876.5 km |
| Mar del Plata | 2886.2 km |
| Necochea | 2903.5 km |
| Trelew | 2920.2 km |
| Balcarce | 2937.9 km |
| Puerto Madryn | 2938.9 km |
| Viedma | 2964.2 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
40.4 km
M 4.8
South Sandwich Islands region
Unknown · 2026-09-29 04:16 UTC
51.0 km
M 5.0
South Sandwich Islands region
Unknown · 2026-09-19 09:59 UTC
55.8 km
M 4.4
South Sandwich Islands region
Unknown · 2026-08-31 21:46 UTC
86.8 km
M 6.4
South Sandwich Islands region
Unknown · 2026-07-11 10:26 UTC
6.6 km
M 5.7
South Sandwich Islands region
Unknown · 2026-05-20 23:00 UTC
90.3 km
M 4.9
South Sandwich Islands region
Unknown · 2026-04-02 20:22 UTC
26.8 km
M 4.5
South Sandwich Islands region
Unknown · 2026-03-06 20:16 UTC
73.1 km
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