Indonesia earthquakes

M6.6 earthquake 235 km SSW of Kencong, Indonesia

A magnitude 6.6 earthquake struck 235 km SSW of Kencong, Indonesia on Sat, Jun 4, 1994, 4:06 AM GMT+7 (21:06 UTC), 26 km (16 mi) below the surface.

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Map

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The earthquake

Magnitude: 6.6 (Mw, moment), strong
Magnitude from: USGS National Earthquake Information Center
Local time: Sat, Jun 4, 1994, 4:06 AM GMT+7
UTC: 1994-06-03 21:06:59 UTC
Depth: 25.9 km (16.1 mi), shallow
Epicenter: 10.362° S, 112.892° E
Region: Indonesia
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
6.6	Mw, moment	USGS National Earthquake Information Center	Preferred · Reviewed
6.57	Mw, moment	ISC-GEM global catalog	Final · ±0.1
6.6	Mwc, centroid moment	Global CMT project	Preliminary
6.65	Me, energy	Choy, USGS energy magnitude	Reviewed
6.5	Mww, W-phase moment	Duputel, W-phase inversion	Preliminary

Deaths and damage

From NOAA NCEI’s Significant Earthquake Database (record 6832), matched to this event by time and place.

NOAA’s record of this earthquake gives no deaths, injuries or damage.

NOAA’s full record of this earthquake The tsunami it caused

What happened

The USGS’s account of the effects of this earthquake.

Depth from broadband displacement seismograms. FAULT PLANE SOLUTION: P-Waves NP1:Strike=51 Dip=55 Slip=-137 NP2:Strike=293 Dip=56 Slip=-44 Principal Axes: (T) Plg=1 Azm=352 (P) Plg=53 Azm=261 Comment: The focal mechanism is moderately well controlled and corresponds to strike-slip faulting with a large normal component. The preferred fault plane is not determined. RADIATED ENERGY No. of sta: 18 Focal mech. F Energy 2.4+0.5*10**14 Nm MOMENT TENSOR SOLUTION Dep 29 No. of sta: 22 Moment Tensor; Scale 10**18 Nm Mrr=-3.19 Mtt=3.37 Mff=-0.19 Mrt=-0.43 Mrf=-0.87 Mtf=-0.37 Principal axes: (T) Val=3.43 Plg=3 Azm=185 (N) Val=0.03 Plg=16 Azm=94 (P) Val=-3.46 Plg=74 Azm=286 Best Double Couple:Mo=3.4*10**18 NP1:Strike=291 Dip=44 Slip=-67 NP2:Strike=81 Dip=50 Slip=-111 CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 64S,148C M.W.: 62S,122C Centroid Location: Origin Time 21:07: 7.3 0.1 Lat 10.75S 0.01 Lon 113.14E 0.01 Dep 15.0 FIX Half-duration 4.5 Moment Tensor; Scale 10**18 Nm Mrr=-8.64 0.04 Mtt=8.42 0.04 Mff=0.22 0.05 Mrt=-2.14 0.21 Mrf=-0.50 0.19 Mtf=0.24 0.04 Principal Axes: (T) Val=8.70 Plg=7 Azm=178 (N) Val=0.23 Plg=3 Azm=88 (P) Val=-8.93 Plg=82 Azm=337 Best Double Couple:Mo=8.8*10**18 NP1:Strike=271 Dip=38 Slip=-86 NP2:Strike=86 Dip=52 Slip=-93

From the USGS event page for usp0006dnc. 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.

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting: Normal
Moment magnitude: 6.5 Mww
Nodal plane 1: Strike 263°, dip 51°, rake 263°
Nodal plane 2: Strike 93°, dip 39°, rake -81°

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 3.6 and up: 135 in the 60 days after this one and 18 in the 30 days before it.

After

The first 60 of 135.

Before

Earthquakes today Indonesia earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0006dnc (also filed as choy19940603210659, gcmtc060394f, gcmt19940603210657, duputel060394f, iscgem167325). Read Thu, Oct 1, 2026, 2:30 PM UTC.