M5.5 earthquake 15 km SE of Pototano, Indonesia
A magnitude 5.5 earthquake struck 15 km SE of Pototano, Indonesia on Sat, Aug 20, 1983, 2:19 PM GMT+8 (06:19 UTC), 156 km (97 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.5 (mb), moderate
- Local time
- UTC
- 1983-08-20 06:19:30 UTC
- Depth
- 156.2 km (97.1 mi), intermediate-depth
- Epicenter
- 8.530° S, 117.563° E
- Region
- Indonesia
- Strongest shaking
- IV, light shaking
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- IV, light shaking
- Peak ground acceleration
- 1.0% of gravity
- Peak ground velocity
- -1.0 cm/s
- Map
- Automatic
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 2.5 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001xt8 (also filed as gcmtb082083a, gcmt19830820061928, iscgem570543). Read Tue, Sep 22, 2026, 11:01 AM UTC.