| Magnitude | 5.4 |
| Alert | Strong |
| Depth | 56.0 km |
| Coordinates | 13.156, 145.311 |
| UTC time | 1977-03-21 04:36:00.600 |
Earthquake details
Monday, March 21, 1977 Earthquake
The earthquake hit Guam on Monday, March 21, 1977 at 04:36 UTC with a magnitude of 5.4. The closest known location in the current dataset is Dededo Village (Guam - GU), about 65.1 km away. The epicenter is located at longitude 145.311 and latitude 13.156.
| Location | Dededo Village |
| Country | Guam (GU) |
| Severity | Strong |
Earthquake map 1977-03-21
Closest countries
The 12 closest cities near the epicenter.
| Dededo Village | 65.1 km |
| Saipan | 233.9 km |
| Jayapura | 1818.8 km |
| Abepura | 1828.1 km |
| Manokwari | 1994.2 km |
| Wamena | 2045.2 km |
| Mount Hagen | 2119.9 km |
| Nabire | 2134.4 km |
| Tandag | 2135.6 km |
| Bislig | 2148.3 km |
| Monkayo | 2188.9 km |
| Compostela | 2190.1 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
M 4.4
Dededo Village
Guam · 2026-05-26 11:10 UTC
82.0 km
M 4.5
Dededo Village
Guam · 2026-04-12 19:43 UTC
90.8 km
M 4.1
Dededo Village
Guam · 2026-04-09 18:06 UTC
65.3 km
M 4.5
Dededo Village
Guam · 2026-03-29 15:06 UTC
64.2 km
M 4.3
Dededo Village
Guam · 2026-03-29 06:36 UTC
51.5 km
M 4.1
Dededo Village
Guam · 2026-03-21 11:23 UTC
92.3 km
M 4.5
Dededo Village
Guam · 2026-02-27 03:57 UTC
47.6 km
M 4.3
Dededo Village
Guam · 2026-02-15 02:20 UTC
72.6 km
Stay informed
Earthquake alerts
Create targeted notifications for important seismic activity near the places you follow.