| Magnitude | 7.7 |
| Alert | Extreme |
| Depth | 15.0 km |
| Coordinates | 18.204, 147.462 |
| UTC time | 1940-12-28 16:37:44.790 |
Earthquake details
Saturday, December 28, 1940 Earthquake
The earthquake hit Northern Mariana Islands on Saturday, December 28, 1940 at 16:37 UTC with a magnitude of 7.7. The closest known location in the current dataset is Saipan (Northern Mariana Islands - MP), about 379.5 km away. The epicenter is located at longitude 147.462 and latitude 18.204.
| Location | Saipan |
| Country | Northern Mariana Islands (MP) |
| Severity | Extreme |
Earthquake map 1940-12-28
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
|
M 4.0
Saipan
Northern Mariana Islands · 2026-03-25 15:12 UTC
|
391.3 km |
|
M 4.5
Saipan
Northern Mariana Islands · 2026-03-04 10:17 UTC
|
379.9 km |
|
M 4.6
Saipan
Northern Mariana Islands · 2025-11-27 12:26 UTC
|
440.8 km |
|
M 4.5
Saipan
Northern Mariana Islands · 2025-11-21 13:46 UTC
|
299.2 km |
|
M 4.5
Saipan
Northern Mariana Islands · 2025-11-11 01:53 UTC
|
426.7 km |
|
M 4.4
Saipan
Northern Mariana Islands · 2025-11-06 11:21 UTC
|
421.5 km |
|
M 4.3
Saipan
Northern Mariana Islands · 2025-09-28 23:57 UTC
|
473.3 km |
|
M 4.5
Saipan
Northern Mariana Islands · 2025-08-21 05:57 UTC
|
327.6 km |
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