M4.6 earthquake 117 km WSW of Ternate, Indonesia
A magnitude 4.6 earthquake struck 117 km WSW of Ternate, Indonesia on Sat, Mar 21, 1987, 10:29 PM GMT+9 (13:29 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.8 114 km W of Ternate, Indonesia. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb), light
- Local time
- UTC
- 1987-03-21 13:29:04 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 0.491° N, 126.367° 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.
- Depth from
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 1 in the 60 days after this one and 7 in the 30 days before it.
After
Before
- 5.0129 km W of Ternate, Indonesia · 14432 days ago · 38 km deep · 28 km away
- 4.8118 km WSW of Ternate, Indonesia · 14434 days ago · 30 km deep · 6 km away
- 4.5116 km WSW of Ternate, Indonesia · 14436 days ago · 33 km deep · 8 km away
- 4.2143 km W of Ternate, Indonesia · 14443 days ago · 33 km deep · 43 km away
- 4.8108 km WSW of Ternate, Indonesia · 14451 days ago · 33 km deep · 11 km away
- 5.1114 km W of Ternate, Indonesia · 14455 days ago · 47 km deep · 37 km away
- 5.2138 km W of Ternate, Indonesia · 14458 days ago · 42 km deep · 27 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00033gp. Read Tue, Sep 22, 2026, 3:41 AM UTC.