M4.2 earthquake 27 km SSE of Boyolangu, Indonesia
A magnitude 4.2 earthquake struck 27 km SSE of Boyolangu, Indonesia on Sat, Aug 22, 2015, 2:07 AM GMT+7 (19:07 UTC), 121 km (75 mi) below the surface.
A larger quake followed: M4.8 51 km S of Sumberpucung, 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
- 2015-08-21 19:07:12 UTC
- Depth
- 120.6 km (74.9 mi), intermediate-depth
- Epicenter
- 8.364° S, 111.951° 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.
- Location uncertainty
- About 5.3 km horizontally, 9.0 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- From location
- Station coverage gap
- 100°
- Stations used
- 31
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 0 in the 30 days before it.
After
Earthquakes todayIndonesia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000342j. Read Fri, Oct 2, 2026, 8:18 PM UTC.