M4.7 earthquake 7 km SSW of Callaguip, Philippines
A magnitude 4.7 earthquake struck 7 km SSW of Callaguip, Philippines on Fri, Aug 21, 1987, 11:31 PM GMT+8 (15:31 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.1 5 km E of Narvacan, 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
- 1987-08-21 15:31:27 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 18.007° N, 120.453° 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: 1 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayPhilippines earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00037pm. Read Wed, Sep 30, 2026, 10:55 AM UTC.