Earthquake details

Saturday, September 17, 1977 Earthquake

The earthquake hit Guam on Saturday, September 17, 1977 at 05:23 UTC with a magnitude of 6.1. The closest known location in the current dataset is Dededo Village (Guam - GU), about 269.0 km away. The epicenter is located at longitude 143.127 and latitude 11.772.

Magnitude	6.1
Alert	Severe
Depth	33.0 km
Coordinates	11.772, 143.127
UTC time	1977-09-17 05:23:30.200

Location	Dededo Village
Country	Guam (GU)
Severity	Severe

Earthquake map 1977-09-17

Closest countries

The 12 closest cities near the epicenter.

Dededo Village	269.0 km
Saipan	477.0 km
Jayapura	1614.7 km
Abepura	1623.1 km
Manokwari	1727.0 km
Wamena	1826.0 km
Tandag	1877.0 km
Nabire	1884.1 km
Bislig	1884.5 km
Monkayo	1923.3 km
Compostela	1923.7 km
Sorong	1924.9 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	361.6 km
M 4.1 Dededo Village Guam · 2026-04-09 18:06 UTC	298.5 km
M 4.5 Dededo Village Guam · 2026-03-29 15:06 UTC	314.8 km
M 4.3 Dededo Village Guam · 2026-03-29 06:36 UTC	334.0 km
M 4.1 Dededo Village Guam · 2026-03-21 11:23 UTC	287.3 km
M 4.5 Dededo Village Guam · 2026-02-27 03:57 UTC	277.6 km
M 4.3 Dededo Village Guam · 2026-02-15 02:20 UTC	308.2 km
M 4.1 Dededo Village Guam · 2026-02-13 01:20 UTC	287.0 km

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