| Magnitude | 5.2 |
| Alert | Strong |
| Depth | 33.0 km |
| Coordinates | -55.654, -26.404 |
| UTC time | 1999-12-20 18:27:29.420 |
Earthquake details
Monday, December 20, 1999 Earthquake
The earthquake hit South Sandwich Islands region on Monday, December 20, 1999 at 18:27 UTC with a magnitude of 5.2. The closest known location in the current dataset is Ushuaia, about 2621.5 km away. The epicenter is located at longitude -26.404 and latitude -55.654.
| Location | South Sandwich Islands region |
| Country | South Sandwich Islands region |
| Severity | Strong |
Earthquake map 1999-12-20
Closest countries
The 12 closest cities near the epicenter.
| Ushuaia | 2621.5 km |
| Río Grande | 2624.3 km |
| Río Gallegos | 2814.6 km |
| Punta Arenas | 2847.2 km |
| Caleta Olivia | 3002.4 km |
| Mar del Plata | 3036.5 km |
| Comodoro Rivadavia | 3038.5 km |
| Necochea | 3056.2 km |
| Trelew | 3081.8 km |
| Balcarce | 3088.9 km |
| Puerto Madryn | 3100.2 km |
| Viedma | 3123.3 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
75.2 km
M 5.0
South Sandwich Islands region
Unknown · 2026-09-04 06:45 UTC
57.5 km
M 5.2
South Sandwich Islands region
Unknown · 2026-09-02 10:54 UTC
88.2 km
M 5.1
South Sandwich Islands region
Unknown · 2026-08-30 03:55 UTC
96.8 km
M 5.0
South Sandwich Islands region
Unknown · 2026-07-29 10:30 UTC
64.9 km
M 4.6
South Sandwich Islands region
Unknown · 2026-07-12 15:15 UTC
36.3 km
M 4.5
South Sandwich Islands region
Unknown · 2026-07-03 01:53 UTC
81.6 km
M 4.6
South Sandwich Islands region
Unknown · 2026-07-03 01:49 UTC
70.5 km
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