| Magnitude | 5.4 |
| Alert | Strong |
| Depth | 33.0 km |
| Coordinates | -59.556, -26.111 |
| UTC time | 1978-12-30 05:16:22.400 |
Earthquake details
Saturday, December 30, 1978 Earthquake
The earthquake hit South Sandwich Islands region on Saturday, December 30, 1978 at 05:16 UTC with a magnitude of 5.4. The closest known location in the current dataset is Ushuaia, about 2554.3 km away. The epicenter is located at longitude -26.111 and latitude -59.556.
| Location | South Sandwich Islands region |
| Country | South Sandwich Islands region |
| Severity | Strong |
Earthquake map 1978-12-30
Closest countries
The 12 closest cities near the epicenter.
| Ushuaia | 2554.3 km |
| Río Grande | 2577.6 km |
| Punta Arenas | 2794.8 km |
| Río Gallegos | 2794.9 km |
| Caleta Olivia | 3066.2 km |
| Comodoro Rivadavia | 3109.8 km |
| Trelew | 3200.3 km |
| Puerto Madryn | 3226.1 km |
| Mar del Plata | 3270.1 km |
| Necochea | 3275.1 km |
| Viedma | 3285.8 km |
| Balcarce | 3317.7 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
56.7 km
M 5.1
South Sandwich Islands region
Unknown · 2026-09-12 00:55 UTC
81.8 km
M 5.4
South Sandwich Islands region
Unknown · 2026-08-21 13:06 UTC
82.4 km
M 4.9
South Sandwich Islands region
Unknown · 2026-07-24 00:37 UTC
96.5 km
M 4.9
South Sandwich Islands region
Unknown · 2026-07-21 08:53 UTC
56.9 km
M 4.8
South Sandwich Islands region
Unknown · 2026-07-18 16:57 UTC
15.0 km
M 4.6
South Sandwich Islands region
Unknown · 2026-07-17 18:24 UTC
18.2 km
M 4.8
South Sandwich Islands region
Unknown · 2026-07-15 15:36 UTC
11.7 km
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