M4.7 earthquake 9 km NNW of Malabugas, Philippines
A magnitude 4.7 earthquake struck 9 km NNW of Malabugas, Philippines on Fri, Sep 4, 1987, 8:35 AM GMT+8 (00:35 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.0 22 km SW of Colipapa, 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
- 1987-09-04 00:35:56 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 9.455° N, 122.743° 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: 2 in the 60 days after this one and 11 in the 30 days before it.
After
- 5.022 km SW of Colipapa, Philippines · 14266 days ago · 33 km deep · 40 km away
- 4.812 km NW of Tabuan, Philippines · 14226 days ago · 51 km deep · 14 km away
Before
- 4.917 km SW of Colipapa, Philippines · 14269 days ago · 33 km deep · 34 km away
- 4.840 km SW of Colipapa, Philippines · 14270 days ago · 33 km deep · 58 km away
- 5.432 km SW of Alim, Philippines · 14270 days ago · 52 km deep · 52 km away
- 4.548 km WSW of Colipapa, Philippines · 14271 days ago · 33 km deep · 65 km away
- 4.445 km SW of Colipapa, Philippines · 14273 days ago · 33 km deep · 61 km away
- 4.960 km SW of Colipapa, Philippines · 14276 days ago · 33 km deep · 77 km away
- 4.443 km SW of Colipapa, Philippines · 14276 days ago · 33 km deep · 59 km away
- 4.362 km SW of Colipapa, Philippines · 14278 days ago · 33 km deep · 74 km away
- 4.841 km SW of Alim, Philippines · 14278 days ago · 33 km deep · 59 km away
- 5.225 km WSW of Colipapa, Philippines · 14278 days ago · 30 km deep · 43 km away
- 5.220 km SW of Colipapa, Philippines · 14278 days ago · 24 km deep · 37 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000382r. Read Mon, Sep 28, 2026, 6:29 AM UTC.