M4.2 earthquake 169 km S of Boyolangu, Indonesia
A magnitude 4.2 earthquake struck 169 km S of Boyolangu, Indonesia on Sat, May 30, 1981, 10:11 PM GMT+7 (15:11 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.8 116 km S of Boyolangu, Indonesia. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1981-05-30 15:11:28 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 9.644° S, 112.028° 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
- OPERATOR_ASSIGNED
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 1 in the 30 days before it.
After
Before
Earthquakes todayIndonesia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001dy7. Read Fri, Oct 2, 2026, 3:17 PM UTC.