M4.3 earthquake 101 km ENE of Luwuk, Indonesia
A magnitude 4.3 earthquake struck 101 km ENE of Luwuk, Indonesia on Tue, Jul 22, 2003, 4:21 AM GMT+8 (20:21 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.5 78 km S of Gorontalo, Indonesia. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2003-07-21 20:21:24 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 0.493° S, 123.574° E
- Region
- Indonesia
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
What happened
The USGS’s account of the effects of this earthquake.
no people dead or missing; no people injured; no buildings damaged or destroyed
From the USGS event page for usp000c31d. 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
- OPERATOR_ASSIGNED
- Station coverage gap
- 129°
- Stations used
- 22
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.554 km SSE of Gorontalo, Indonesia · 8464 days ago · 150 km deep · 73 km away
- 4.065 km SSE of Gorontalo, Indonesia · 8461 days ago · 33 km deep · 62 km away
- 4.456 km SE of Gorontalo, Indonesia · 8453 days ago · 33 km deep · 75 km away
- 4.566 km SE of Gorontalo, Indonesia · 8451 days ago · 142 km deep · 67 km away
- 5.1183 km ESE of Gorontalo, Indonesia · 8428 days ago · 33 km deep · 99 km away
- 5.578 km S of Gorontalo, Indonesia · 8423 days ago · 94 km deep · 79 km away
- 4.171 km S of Gorontalo, Indonesia · 8416 days ago · 200 km deep · 81 km away
Before
- 5.5110 km ENE of Luwuk, Indonesia · 8476 days ago · 33 km deep · 9 km away
- 4.480 km S of Gorontalo, Indonesia · 8485 days ago · 99 km deep · 79 km away
- 4.857 km SE of Gorontalo, Indonesia · 8487 days ago · 134 km deep · 72 km away
- 4.657 km SSE of Gorontalo, Indonesia · 8498 days ago · 126 km deep · 71 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000c31d. Read Sun, Oct 4, 2026, 8:17 PM UTC.