Timor Leste earthquakes

M6.1 earthquake 268 km NE of Lospalos, Timor Leste

A magnitude 6.1 earthquake struck 268 km NE of Lospalos, Timor Leste on Sat, Oct 17, 1981, 2:44 PM GMT+8 (06:44 UTC), 179 km (111 mi) below the surface.

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The earthquake

Magnitude
6.1 (mb, body-wave), strong
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1981-10-17 06:44:55 UTC
Depth
179.0 km (111.2 mi), intermediate-depth
Epicenter
7.101° S, 128.974° E
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.ScaleComputed byNotes
6.1mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · 31 stations
6.4Mw, momentISC-GEM global catalogFinal · ±0.1
6.4Mwc, centroid momentGlobal CMT projectPreliminary

What happened

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

CENTROID, MOMENT TENSOR SOLUTION HARVARD EVENT-FILE NAME B101781A DATA USED: GDSN L.P. BODY WAVES: 15S, 43C, T=45 CENTROID LOCATION: ORIGIN TIME 6:44:57.6 0.4 LAT 7.22S 0.03;LON 128.78E 0.04 DEP 185.8 1.4;HALF-DURATION 5.0 MOMENT TENSOR; SCALE 10**25 D-CM MRR=2.43 0.14; MTT=-4.21 0.18 MFF=1.77 0.19; MRT=0.40 0.14 MRF=2.94 0.15; MTF=-1.21 0.17 PRINCIPAL AXES: 1.(T) VAL=5.09;PLG=47;AZM=265 2.(N) -0.49; 41; 67 3.(P) -4.60; 9; 165 BEST DOUBLE COUPLE:M0=4.9*10**25 NP1:STRIKE=292;DIP=51;SLIP=148 NP2:Strike=44;Dip=66;Slip=44

From the USGS event page for usp0001ggu. 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.

How well it is located

Reviewed by a seismologist.

Depth from
CONSTRAINED_BY_DEPTH_PHASES

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 3.1 and up: 9 in the 60 days after this one and 4 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001ggu (also filed as gcmtb101781a, gcmt19811017064453, iscgem610052). Read Sat, Oct 3, 2026, 12:27 PM UTC.