| Magnitude | 5.6 |
| Alert | Strong |
| Depth | 59.9 km |
| Coordinates | -59.499, -26.483 |
| UTC time | 1966-09-23 18:25:57.550 |
Earthquake details
Friday, September 23, 1966 Earthquake
The earthquake hit South Sandwich Islands region on Friday, September 23, 1966 at 18:25 UTC with a magnitude of 5.6. The closest known location in the current dataset is Ushuaia, about 2534.2 km away. The epicenter is located at longitude -26.483 and latitude -59.499.
| Location | South Sandwich Islands region |
| Country | South Sandwich Islands region |
| Severity | Strong |
Earthquake map 1966-09-23
Closest countries
The 12 closest cities near the epicenter.
| Ushuaia | 2534.2 km |
| Río Grande | 2557.1 km |
| Río Gallegos | 2774.0 km |
| Punta Arenas | 2774.5 km |
| Caleta Olivia | 3044.4 km |
| Comodoro Rivadavia | 3088.0 km |
| Trelew | 3178.4 km |
| Puerto Madryn | 3204.1 km |
| Mar del Plata | 3249.0 km |
| Necochea | 3253.8 km |
| Viedma | 3264.0 km |
| Balcarce | 3296.6 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
M 5.0
South Sandwich Islands region
Unknown · 2026-09-27 21:13 UTC
59.3 km
M 5.1
South Sandwich Islands region
Unknown · 2026-09-12 00:55 UTC
97.1 km
M 5.4
South Sandwich Islands region
Unknown · 2026-08-21 13:06 UTC
72.2 km
M 4.9
South Sandwich Islands region
Unknown · 2026-07-21 08:53 UTC
52.5 km
M 4.8
South Sandwich Islands region
Unknown · 2026-07-18 16:57 UTC
15.1 km
M 4.6
South Sandwich Islands region
Unknown · 2026-07-17 18:24 UTC
22.3 km
M 4.8
South Sandwich Islands region
Unknown · 2026-07-15 15:36 UTC
11.7 km
M 5.4
South Sandwich Islands region
Unknown · 2026-07-11 06:52 UTC
8.0 km
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