M5.8 earthquake 48 km SSE of Komodo, Indonesia
A magnitude 5.8 earthquake struck 48 km SSE of Komodo, Indonesia on Mon, Dec 19, 1983, 1:28 AM GMT+8 (17:28 UTC), 36 km (22 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.8 (mb, body-wave), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1983-12-18 17:28:30 UTC
- Depth
- 35.5 km (22.1 mi), shallow
- Epicenter
- 8.964° S, 119.728° E
- Region
- Indonesia
- Strongest shaking
- V, moderate shaking
- 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 |
|---|---|---|---|
| 5.8 | mb, body-wave | USGS National Earthquake Information Center | Preferred · Reviewed · 30 stations |
| 5.81 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
| 5.8 | Mwc, centroid moment | Global CMT project | Preliminary |
What happened
The USGS’s account of the effects of this earthquake.
CENTROID, MOMENT TENSOR SOLUTION HARVARD EVENT-FILE NAME B121883A DATA USED: GDSN L.P. BODY WAVES: 16S, 39C, T=45 CENTROID LOCATION: ORIGIN TIME 17:28:36.0 0.3 LAT 8.84S 0.03;LON 119.51E 0.03 DEP 75.4 1.9;HALF-DURATION 3.1 MOMENT TENSOR; SCALE 10**24 D-CM MRR=-1.20 0.12; MTT=-3.83 0.23 MFF=5.03 0.25; MRT=-1.82 0.14 MRF=1.16 0.12; MTF=4.05 0.18 PRINCIPAL AXES: 1.(T) VAL=6.62;PLG=3;AZM=291 2.(N) -0.34; 67; 193 3.(P) -6.28; 23; 22 BEST DOUBLE COUPLE:M0=6.4*10**24 NP1:STRIKE=64;DIP=72;SLIP=-14 NP2:Strike=158;Dip=77;Slip=-161
From the USGS event page for usp00020m4. U.S. Geological Survey text and figures are in the public domain.
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- V, moderate shaking
- Peak ground acceleration
- 7.4% of gravity
- Peak ground velocity
- 1.3 cm/s
- Map
- Automatic
Did you feel it?
No one has reported feeling this quake to the USGS.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.8 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 usp00020m4 (also filed as gcmtb121883a, gcmt19831218172830, iscgem563170). Read Fri, Oct 2, 2026, 6:37 AM UTC.