| 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 4.5
Mariana Islands region
Unknown · 2026-06-22 05:03 UTC
62.5 km
M 4.9
Saipan
Northern Mariana Islands · 2026-06-09 16:48 UTC
97.7 km
M 5.2
Saipan
Northern Mariana Islands · 2026-04-02 06:13 UTC
92.9 km
M 4.2
Saipan
Northern Mariana Islands · 2026-01-19 20:38 UTC
87.1 km
M 4.0
Mariana Islands region
Unknown · 2025-08-05 16:57 UTC
53.8 km
M 4.4
Saipan
Northern Mariana Islands · 2025-07-05 10:53 UTC
32.3 km
M 4.1
Pagan region
Northern Mariana Islands · 2024-09-23 11:08 UTC
88.7 km
M 4.2
Mariana Islands region
Unknown · 2024-06-14 05:00 UTC
78.0 km
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