M4.9 earthquake 0 km NW of Gamut, Philippines
A magnitude 4.9 earthquake struck 0 km NW of Gamut, Philippines on Wed, Dec 28, 1977, 2:44 PM GMT+8 (06:44 UTC), 53 km (33 mi) below the surface.
A larger quake followed: M5.3 3 km WNW of Amaga, Philippines. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1977-12-28 06:44:36 UTC
- Depth
- 53.0 km (32.9 mi), shallow
- Epicenter
- 8.534° N, 126.239° E
- Region
- Philippines
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Stations used
- 9
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 7 in the 60 days after this one and 0 in the 30 days before it.
After
- 5.33 km WNW of Amaga, Philippines · 17800 days ago · 52 km deep · 22 km away
- 5.31 km N of Alegria, Philippines · 17800 days ago · 53 km deep · 25 km away
- 4.62 km SSW of Talacogon, Philippines · 17798 days ago · 55 km deep · 52 km away
- 5.22 km SSW of Amaga, Philippines · 17798 days ago · 46 km deep · 20 km away
- 5.34 km WNW of Amaga, Philippines · 17798 days ago · 47 km deep · 23 km away
- 5.12 km W of Javier, Philippines · 17798 days ago · 63 km deep · 20 km away
- 5.04 km S of San Francisco, Philippines · 17792 days ago · 66 km deep · 32 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000s8x. Read Wed, Sep 23, 2026, 6:26 AM UTC.