M3.9 earthquake 56 km ESE of Singkil, Indonesia
A magnitude 3.9 earthquake struck 56 km ESE of Singkil, Indonesia on Thu, May 28, 1987, 3:01 PM GMT+7 (08:01 UTC), 95 km (59 mi) below the surface.
A larger quake followed: M4.0 17 km SE of Sibolga, Indonesia. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.9 (mb, body-wave), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1987-05-28 08:01:23 UTC
- Depth
- 94.9 km (59.0 mi), intermediate-depth
- Epicenter
- 2.153° N, 98.280° E
- Region
- Indonesia
- 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
- FROM_LOCATION
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 5 in the 30 days before it.
After
Before
- 4.744 km SSE of Parapat, Indonesia · 14400 days ago · 43 km deep · 89 km away
- 3.837 km SSE of Parapat, Indonesia · 14401 days ago · 73 km deep · 83 km away
- 4.156 km NE of Sibolga, Indonesia · 14401 days ago · 65 km deep · 96 km away
- 4.940 km NE of Sibolga, Indonesia · 14402 days ago · 33 km deep · 86 km away
- 5.848 km NE of Sibolga, Indonesia · 14402 days ago · 19 km deep · 90 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00035ab. Read Fri, Oct 2, 2026, 3:01 PM UTC.