M5.5 earthquake 133 km WNW of Ternate, Indonesia
A magnitude 5.5 earthquake struck 133 km WNW of Ternate, Indonesia on Sun, Aug 18, 1968, 2:43 PM GMT+9 (05:43 UTC), 20 km (12 mi) below the surface.
A larger quake followed: M5.8 130 km ESE of Laikit, Laikit II (Dimembe), Indonesia. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.5 (mw), moderate
- Local time
- UTC
- 1968-08-18 05:43:57 UTC
- Depth
- 20.0 km (12.4 mi), shallow
- Epicenter
- 1.390° N, 126.340° E
- Region
- Indonesia
- 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.
- Magnitude uncertainty
- ±0.20
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 and up: 3 in the 60 days after this one and 9 in the 30 days before it.
After
- 5.8130 km ESE of Laikit, Laikit II (Dimembe), Indonesia · 21218 days ago · 35 km deep · 37 km away
- 5.5136 km WNW of Ternate, Indonesia · 21212 days ago · 16 km deep · 36 km away
- 5.5Molucca Sea · 21207 days ago · 15 km deep · 7 km away
Before
- 5.5142 km WNW of Tobelo, Indonesia · 21219 days ago · 20 km deep · 91 km away
- 6.0129 km E of Bitung, Indonesia · 21220 days ago · 46 km deep · 7 km away
- 5.8142 km NW of Ternate, Indonesia · 21224 days ago · 30 km deep · 38 km away
- 5.5142 km NW of Ternate, Indonesia · 21225 days ago · 20 km deep · 19 km away
- 6.0136 km NW of Ternate, Indonesia · 21225 days ago · 25 km deep · 26 km away
- 5.9147 km E of Laikit, Laikit II (Dimembe), Indonesia · 21227 days ago · 30 km deep · 26 km away
- 6.5114 km E of Bitung, Indonesia · 21227 days ago · 21 km deep · 21 km away
- 5.8117 km WNW of Ternate, Indonesia · 21227 days ago · 20 km deep · 17 km away
- 7.7121 km E of Bitung, Indonesia · 21227 days ago · 21 km deep · 16 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem818120. Read Tue, Sep 22, 2026, 4:16 AM UTC.