M4.7 earthquake 17 km S of Calolbon, Philippines
A magnitude 4.7 earthquake struck 17 km S of Calolbon, Philippines on Sun, Aug 9, 1987, 5:13 PM GMT+8 (09:13 UTC), 72 km (45 mi) below the surface.
A larger quake followed: M5.0 Catanduanes, 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, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1987-08-09 09:13:08 UTC
- Depth
- 72.0 km (44.7 mi), intermediate-depth
- Epicenter
- 13.435° N, 124.116° 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
- CONSTRAINED_BY_DEPTH_PHASES
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 usp00037cy. Read Fri, Oct 2, 2026, 10:24 PM UTC.