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M3.9 earthquake Banda Sea

A magnitude 3.9 earthquake struck in the Banda Sea on Wed, Jul 13, 1983, 11:27 PM GMT+8 (15:27 UTC), 165 km (103 mi) below the surface.

A larger quake followed: M4.6 261 km NE of Lospalos, Timor Leste. This one was a foreshock.

Lospalos forecast

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.9 (mb), minor
Local time
UTC
1983-07-13 15:27:51 UTC
Depth
165.4 km (102.8 mi), intermediate-depth
Epicenter
6.987° S, 129.456° E
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
FROM_LOCATION

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 4.6261 km NE of Lospalos, Timor Leste · 15776 days ago · 43 km deep · 76 km away
  2. 4.2Kepulauan Babar, Indonesia · 15776 days ago · 144 km deep · 60 km away
  3. 4.2243 km NE of Lospalos, Timor Leste · 15776 days ago · 141 km deep · 81 km away
  4. 5.5297 km ENE of Lospalos, Timor Leste · 15774 days ago · 149 km deep · 25 km away
  5. 5.0Kepulauan Babar, Indonesia · 15773 days ago · 103 km deep · 18 km away
  6. 4.8Banda Sea · 15771 days ago · 33 km deep · 61 km away
  7. 5.0293 km ENE of Lospalos, Timor Leste · 15769 days ago · 33 km deep · 64 km away
  8. 6.0Banda Sea · 15753 days ago · 160 km deep · 90 km away
  9. 5.6Kepulauan Babar, Indonesia · 15746 days ago · 125 km deep · 8 km away
  10. 4.6Kepulauan Babar, Indonesia · 15732 days ago · 164 km deep · 54 km away
  11. 4.6Banda Sea · 15726 days ago · 177 km deep · 24 km away

Before

  1. 4.5Kepulauan Babar, Indonesia · 15779 days ago · 159 km deep · 6 km away
  2. 4.5Banda Sea · 15791 days ago · 161 km deep · 65 km away
  3. 4.2284 km NE of Lospalos, Timor Leste · 15791 days ago · 189 km deep · 49 km away
  4. 4.9Kepulauan Babar, Indonesia · 15792 days ago · 92 km deep · 79 km away
  5. 4.7Kepulauan Babar, Indonesia · 15793 days ago · 125 km deep · 58 km away
  6. 4.8Kepulauan Babar, Indonesia · 15799 days ago · 104 km deep · 56 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001wsc. Read Tue, Sep 22, 2026, 12:16 PM UTC.