| Magnitude | 5.3 |
| Alert | Strong |
| Depth | 33.0 km |
| Coordinates | -56.193, -26.443 |
| UTC time | 1977-07-18 13:21:03.300 |
Earthquake details
Monday, July 18, 1977 Earthquake
The earthquake hit South Sandwich Islands region on Monday, July 18, 1977 at 13:21 UTC with a magnitude of 5.3. The closest known location in the current dataset is Ushuaia, about 2603.7 km away. The epicenter is located at longitude -26.443 and latitude -56.193.
| Location | South Sandwich Islands region |
| Country | South Sandwich Islands region |
| Severity | Strong |
Earthquake map 1977-07-18
Closest countries
The 12 closest cities near the epicenter.
| Ushuaia | 2603.7 km |
| Río Grande | 2609.2 km |
| Río Gallegos | 2803.5 km |
| Punta Arenas | 2831.7 km |
| Caleta Olivia | 3003.1 km |
| Comodoro Rivadavia | 3040.3 km |
| Mar del Plata | 3062.2 km |
| Necochea | 3079.7 km |
| Trelew | 3090.5 km |
| Puerto Madryn | 3110.0 km |
| Balcarce | 3113.9 km |
| Viedma | 3138.4 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
22.6 km
M 5.0
South Sandwich Islands region
Unknown · 2026-09-04 06:45 UTC
17.9 km
M 6.2
South Sandwich Islands region
Unknown · 2026-09-02 23:46 UTC
90.7 km
M 5.2
South Sandwich Islands region
Unknown · 2026-09-02 10:54 UTC
36.4 km
M 5.1
South Sandwich Islands region
Unknown · 2026-08-30 03:55 UTC
45.4 km
M 5.0
South Sandwich Islands region
Unknown · 2026-07-29 10:30 UTC
67.1 km
M 4.6
South Sandwich Islands region
Unknown · 2026-07-12 15:15 UTC
48.7 km
M 4.5
South Sandwich Islands region
Unknown · 2026-07-03 01:53 UTC
70.6 km
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