Earthquake details

Wednesday, February 23, 1977 Earthquake

The earthquake hit Guam on Wednesday, February 23, 1977 at 21:14 UTC with a magnitude of 5.1. The closest known location in the current dataset is Dededo Village (Guam - GU), about 186.4 km away. The epicenter is located at longitude 144.156 and latitude 11.982.

Magnitude	5.1
Alert	Strong
Depth	33.0 km
Coordinates	11.982, 144.156
UTC time	1977-02-23 21:14:09.200

Location	Dededo Village
Country	Guam (GU)
Severity	Strong

Earthquake map 1977-02-23

Closest countries

The 12 closest cities near the epicenter.

Dededo Village	186.4 km
Saipan	399.0 km
Jayapura	1660.0 km
Abepura	1669.0 km
Manokwari	1813.7 km
Wamena	1880.3 km
Nabire	1958.1 km
Mount Hagen	1985.9 km
Tandag	1991.2 km
Bislig	1999.0 km
Sorong	2020.4 km
Monkayo	2037.8 km

Nearby earthquakes

The latest 8 earthquakes within 100 km of this epicenter.

M 4.5 Dededo Village Guam · 2026-04-12 19:43 UTC	267.9 km
M 4.1 Dededo Village Guam · 2026-04-09 18:06 UTC	213.3 km
M 4.5 Dededo Village Guam · 2026-03-29 15:06 UTC	226.1 km
M 4.3 Dededo Village Guam · 2026-03-29 06:36 UTC	232.1 km
M 4.1 Dededo Village Guam · 2026-03-21 11:23 UTC	212.7 km
M 4.5 Dededo Village Guam · 2026-02-27 03:57 UTC	189.0 km
M 4.3 Dededo Village Guam · 2026-02-15 02:20 UTC	223.6 km
M 4.1 Dededo Village Guam · 2026-02-13 01:20 UTC	219.9 km

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