M4.7 earthquake 8 km SSE of Gamut, Philippines
A magnitude 4.7 earthquake struck 8 km SSE of Gamut, Philippines on Sat, Oct 24, 1987, 2:50 AM GMT+8 (18:50 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.4 30 km E of Union, Philippines. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb), light
- Local time
- UTC
- 1987-10-23 18:50:56 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 8.935° N, 126.199° 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.
- Depth from
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 3 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.619 km NNW of Cortes, Philippines · 14215 days ago · 101 km deep · 57 km away
- 5.430 km E of Union, Philippines · 14197 days ago · 25 km deep · 98 km away
- 4.68 km NW of Marihatag, Philippines · 14163 days ago · 33 km deep · 10 km away
Before
Earthquakes todayPhilippines earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00039hs. Read Thu, Sep 24, 2026, 9:06 AM UTC.