Earthquake details

Saturday, March 4, 1978 Earthquake

The earthquake hit Guam on Saturday, March 4, 1978 at 01:21 UTC with a magnitude of 5.4. The closest known location in the current dataset is Dededo Village (Guam - GU), about 222.2 km away. The epicenter is located at longitude 143.519 and latitude 11.993.

Magnitude	5.4
Alert	Strong
Depth	33.0 km
Coordinates	11.993, 143.519
UTC time	1978-03-04 01:21:39.200

Location	Dededo Village
Country	Guam (GU)
Severity	Strong

Earthquake map 1978-03-04

Closest countries

The 12 closest cities near the epicenter.

Dededo Village	222.2 km
Saipan	432.3 km
Jayapura	1646.5 km
Abepura	1655.2 km
Manokwari	1772.2 km
Wamena	1861.1 km
Tandag	1922.7 km
Nabire	1925.7 km
Bislig	1931.0 km
Monkayo	1970.2 km
Compostela	1970.7 km
Sorong	1972.3 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	313.5 km
M 4.1 Dededo Village Guam · 2026-04-09 18:06 UTC	251.5 km
M 4.5 Dededo Village Guam · 2026-03-29 15:06 UTC	267.3 km
M 4.3 Dededo Village Guam · 2026-03-29 06:36 UTC	284.9 km
M 4.1 Dededo Village Guam · 2026-03-21 11:23 UTC	242.3 km
M 4.5 Dededo Village Guam · 2026-02-27 03:57 UTC	229.9 km
M 4.3 Dededo Village Guam · 2026-02-15 02:20 UTC	261.3 km
M 4.1 Dededo Village Guam · 2026-02-13 01:20 UTC	243.8 km

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