M5.6 earthquake 150 km S of Sarangani, Philippines
A magnitude 5.6 earthquake struck 150 km S of Sarangani, Philippines on Wed, Jul 22, 1987, 4:03 PM GMT+8 (08:03 UTC), 51 km (32 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.6 (Mw, moment), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1987-07-22 08:03:17 UTC
- Depth
- 51.4 km (31.9 mi), shallow
- Epicenter
- 4.051° N, 125.582° E
- Region
- Philippines
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 5.6 | Mw, moment | USGS National Earthquake Information Center | Preferred · Reviewed |
| 5.58 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
| 5.6 | Mwc, centroid moment | Global CMT project | Preliminary |
What happened
The USGS’s account of the effects of this earthquake.
CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 15S, 41C Centroid Location: Origin Time 08:03:18.3 0.5 Lat 4.01N 0.06 Lon 125.39E 0.05 Dep 31.7 4.5 Half-duration 2.5 Moment Tensor; Scale 10**17 Nm Mrr=2.30 0.12 Mtt=0.33 0.16 Mff=-2.64 0.19 Mrt=-0.35 0.27 Mrf=-1.51 0.34 Mtf=0.13 0.13 Principal Axes: (T) Val=2.78 Plg=72 Azm=120 (N) Val=0.28 Plg=9 Azm=2 (P) Val=-3.06 Plg=16 Azm=269 Best Double Couple:Mo=2.9*10**17 NP1:Strike=347 Dip=30 Slip=73 NP2:Strike=187 Dip=61 Slip=100
From the USGS event page for usp00036uy. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
No one has reported feeling this quake to the USGS.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.6 and up: 3 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.6175 km S of Sarangani, Philippines · 14319 days ago · 33 km deep · 27 km away
- 4.3182 km S of Sarangani, Philippines · 14304 days ago · 71 km deep · 42 km away
- 5.1168 km SSE of Sarangani, Philippines · 14276 days ago · 170 km deep · 52 km away
Before
Earthquakes todayPhilippines earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00036uy (also filed as gcmtb072287b, gcmt19870722080316, iscgem462646). Read Sun, Oct 4, 2026, 3:28 PM UTC.