Major magnitude 7.7 earthquake - 91 km northeast of Tobelo, Kabupaten Halmahera Utara, North Maluku, Indonesia, on Thursday, September 8, 1966 at 21:15 (GMT)

Major magnitude 7.7 earthquake - 91 km northeast of Tobelo, Kabupaten Halmahera Utara, North Maluku, Indonesia, on Thursday, September 8, 1966 at 21:15 (GMT)

Major magnitude 7.7 earthquake at 115 km depth

Date & time: Sep 8, 1966 21:15:56 UTC
Magnitude: 7.7
Depth: 115.0 km
Epicenter latitude / longitude: 2.388°N / 128.49°E (North Maluku, Indonesia)
Antipode: 2.388°S / 51.51°W
Nearest volcano: Tarakan (96 km / 60 mi)
Nearby towns and cities:
91 km (56 mi) NE of Tobelo (Kabupaten Halmahera Utara) (pop: 10,000) --> See nearby quakes!
211 km (131 mi) NNE of Sofifi (Kota Tidore Kepulauan) (pop: 36,200) --> See nearby quakes!
216 km (134 mi) NE of Ternate (pop: 101,700) --> See nearby quakes!
381 km (237 mi) ENE of Bitung (pop: 137,400) --> See nearby quakes!
403 km (251 mi) ENE of Laikit, Laikit II (Dimembe) (Kabupaten Minahasa Utara, North Sulawesi) (pop: 8,000) --> See nearby quakes!
416 km (258 mi) ENE of Tondano (Kabupaten Minahasa, North Sulawesi) (pop: 33,300) --> See nearby quakes!
476 km (296 mi) NW of Sorong (West Papua) (pop: 125,500) --> See nearby quakes!
528 km (328 mi) SE of Glan (Sarangani, Soccsksargen, Philippines) (pop: 24,300) --> See nearby quakes!
534 km (332 mi) SE of Malapatan (Sarangani, Soccsksargen, Philippines) (pop: 19,400) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.2 x 1016 joules (6219 gigawatt hours, equivalent to 5.4 x 106 tons of TNT or 334.4 atomic bombs!) | about seismic energy
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
Mag.DepthLocationSource
7.7115 kmHalmahera, IndonesiaUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake.
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Aftershocks

[More info]

Recorded aftershocks, latest first (13 quakes)

Date and timeMag
Depth
LocationDetails
Aug 18, 1968 18:56
53 years ago
5.8

35 km
Molucca Sea, 20 km N of Pulau Gureda Island, North Maluku, IndonesiaMore
Aug 17, 1968 04:00
53 years ago
6.0

35 km
Molucca Sea, 44 km N of Pulau Gureda Island, North Maluku, IndonesiaMore
Aug 13, 1968 02:52
53 years ago
5.8

30 km
Molucca Sea, 143 km NW of Ternate, North Maluku, IndonesiaMore
Aug 11, 1968 20:00
53 years ago
6.0

30 km
Molucca Sea, 76 km NE of Pulau Gureda Island, North Maluku, IndonesiaMore
Aug 10, 1968 08:10
53 years ago
5.9

30 km
Molucca Sea, 124 km E of Bitung, North Sulawesi, IndonesiaMore
Aug 10, 1968 05:51
53 years ago
6.5

25 km
Molucca Sea, 46 km N of Pulau Gureda Island, North Maluku, IndonesiaMore
Aug 10, 1968 04:05
53 years ago
5.8

20 km
Molucca Sea, 53 km NE of Pulau Gureda Island, North Maluku, IndonesiaMore
Aug 10, 1968 02:07
53 years ago
7.6

23 km
Molucca Sea, 59 km N of Pulau Gureda Island, North Maluku, IndonesiaMore
Mar 17, 1968 20:14
54 years ago
6.1

65 km
Philippine Sea, 283 km N of Ternate, North Maluku, IndonesiaMore
Oct 16, 1967 16:58
54 years ago
5.7

125 km
Molucca Sea, 3 km NW of Pulau Tongidi Island, North Maluku, IndonesiaMore
Jul 10, 1967 19:18
55 years ago
5.7

75 km
Philippine Sea, 26 km NW of Pulau Garat Island, North Sulawesi, IndonesiaMore
May 9, 1967 21:30
55 years ago
5.7

90 km
Philippine Sea, 56 km NE of Pulau Garat Island, North Sulawesi, IndonesiaMore
Dec 2, 1966 09:31
55 years ago
5.7

75 km
Philippine Sea, 287 km N of Ternate, North Maluku, IndonesiaMore

Earlier earthquakes in the same area

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