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Very strong mag. 6.3 earthquake - 67 km northwest of Pulau Tutu Island, North Maluku, Indonesia, on Sunday, August 17, 1986 at 15:31 GMT

Very strong mag. 6.3 earthquake - 67 km northwest of Pulau Tutu Island, North Maluku, Indonesia, on Sunday, August 17, 1986 at 15:31 GMT

Very strong magnitude 6.3 earthquake at 33 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: Aug 17, 1986 15:31:19 UTC
Magnitude: 6.3
Depth: 33.0 km
Epicenter latitude / longitude: 2.161°N / 127.113°E (Molucca Sea, Indonesia)
Antipode: 2.161°S / 52.887°W
Nearest volcano: Tobaru (86 km / 53 mi)
Nearby towns and cities:
111 km (69 mi) WNW of Tobelo (Kabupaten Halmahera Utara) (pop: 10,000) --> See nearby quakes!
155 km (97 mi) NNW of Ternate (pop: 101,700) --> See nearby quakes!
166 km (103 mi) NNW of Sofifi (Kota Tidore Kepulauan) (pop: 36,200) --> See nearby quakes!
228 km (142 mi) ENE of Bitung (pop: 137,400) --> See nearby quakes!
249 km (155 mi) ENE of Laikit, Laikit II (Dimembe) (Kabupaten Minahasa Utara) (pop: 8,000) --> See nearby quakes!
262 km (163 mi) ENE of Tondano (Kabupaten Minahasa) (pop: 33,300) --> See nearby quakes!
263 km (163 mi) ENE of Manado (pop: 451,900) --> See nearby quakes!
273 km (170 mi) ENE of Tomohon (pop: 27,600) --> See nearby quakes!
404 km (251 mi) SSE of Sarangani (Davao del Sur, Philippines) (pop: 7,510) --> See nearby quakes!
450 km (279 mi) SSE of Baliton (Sarangani, Philippines) (pop: 5,810) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.8 x 1014 joules (49.4 gigawatt hours, equivalent to 42502 tons of TNT or 2.7 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
6.333 kmMolucca Sea (Indonesia)USGS
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 (61 quakes)

Date and timeMag
Depth
LocationDetails
Feb 8, 1987 17:48
35 years ago
6.2

17 km
127 km NW of Ternate, North Maluku, IndonesiaMore
Feb 7, 1987 11:31
35 years ago
5.0

33 km
121 km NW of Ternate, North Maluku, IndonesiaMore
Jan 19, 1987 15:54
35 years ago
5.1

33 km
62 km NW of Pulau Tutu Island, North Maluku, IndonesiaMore
Jan 6, 1987 18:16
35 years ago
4.1

90 km
94 km NE of Pulau Gureda Island, North Maluku, IndonesiaMore
Dec 26, 1986 21:25
35 years ago
5.1

33 km
97 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Dec 8, 1986 12:24
35 years ago
4.8

58 km
97 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Nov 28, 1986 13:44
35 years ago
4.8

86 km
142 km NW of Ternate, North Maluku, IndonesiaMore
Nov 27, 1986 00:30
35 years ago
4.8

62 km
29 km NW of Pulau Deherete Island, North Maluku, IndonesiaMore
Nov 26, 1986 04:11
35 years ago
4.7

61 km
132 km NW of Ternate, North Maluku, IndonesiaMore
Nov 24, 1986 16:01
35 years ago
5.1

48 km
143 km NW of Ternate, North Maluku, IndonesiaMore
Nov 14, 1986 16:37
36 years ago
4.3

33 km
115 km NW of Ternate, North Maluku, IndonesiaMore
Nov 11, 1986 00:02
36 years ago
6.0

79 km
103 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Nov 10, 1986 02:26
36 years ago
4.8

78 km
120 km NW of Pulau Tutu Island, North Maluku, IndonesiaMore
Nov 4, 1986 04:44
36 years ago
5.2

67 km
68 km NW of Pulau Sedeng Island, North Maluku, IndonesiaMore
Oct 30, 1986 21:40
36 years ago
4.7

49 km
151 km E of Bitung, North Sulawesi, IndonesiaMore
Oct 25, 1986 17:03
36 years ago
5.0

113 km
Pulau Tutu, 116 km N of Ternate, North Maluku, IndonesiaMore
Oct 25, 1986 16:45
36 years ago
4.2

33 km
100 km SW of Pulau Karis Island, IndonesiaMore
Oct 22, 1986 05:30
36 years ago
5.0

76 km
109 km NW of Pulau Tutu Island, North Maluku, IndonesiaMore
Oct 21, 1986 21:57
36 years ago
5.0

142 km
84 km N of Ternate, North Maluku, IndonesiaMore
Oct 21, 1986 12:15
36 years ago
4.9

67 km
113 km NW of Ternate, North Maluku, IndonesiaMore
Oct 20, 1986 08:43
36 years ago
5.0

33 km
116 km W of Pulau Deherete Island, North Maluku, IndonesiaMore
Oct 20, 1986 06:30
36 years ago
5.5

42 km
109 km NW of Pulau Laba Island, North Maluku, IndonesiaMore
Oct 20, 1986 06:27
36 years ago
5.2

33 km
109 km S of Pulau Kaburuang Island, North Sulawesi, IndonesiaMore
Oct 15, 1986 00:03
36 years ago
4.5

33 km
151 km NW of Ternate, North Maluku, IndonesiaMore
Oct 8, 1986 16:37
36 years ago
4.4

33 km
165 km NE of Bitung, North Sulawesi, IndonesiaMore
Oct 2, 1986 20:15
36 years ago
5.5

46 km
88 km NW of Pulau Sedeng Island, North Maluku, IndonesiaMore
Sep 26, 1986 01:49
36 years ago
4.7

144 km
79 km NW of Ternate, North Maluku, IndonesiaMore
Sep 6, 1986 04:04
36 years ago
4.8

139 km
81 km N of Ternate, North Maluku, IndonesiaMore
Sep 5, 1986 21:08
36 years ago
4.8

73 km
137 km NW of Ternate, North Maluku, IndonesiaMore
Sep 1, 1986 23:53
36 years ago
5.0

33 km
93 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Aug 27, 1986 01:15
36 years ago
4.2

33 km
97 km NW of Pulau Tutu Island, North Maluku, IndonesiaMore
Aug 26, 1986 19:03
36 years ago
4.6

33 km
81 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Aug 25, 1986 00:19
36 years ago
4.7

33 km
153 km NW of Ternate, North Maluku, IndonesiaMore
Aug 25, 1986 00:13
36 years ago
5.0

33 km
156 km NW of Ternate, North Maluku, IndonesiaMore
Aug 24, 1986 23:46
36 years ago
5.6

35 km
83 km NW of Pulau Tutu Island, North Maluku, IndonesiaMore
Aug 24, 1986 09:37
36 years ago
4.2

33 km
52 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Aug 24, 1986 09:20
36 years ago
4.3

33 km
70 km NW of Pulau Tutu Island, North Maluku, IndonesiaMore
Aug 24, 1986 09:17
36 years ago
4.0

104 km
106 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Aug 24, 1986 06:52
36 years ago
5.0

33 km
89 km NW of Pulau Tutu Island, North Maluku, IndonesiaMore
Aug 24, 1986 02:09
36 years ago
4.6

33 km
58 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Aug 23, 1986 19:53
36 years ago
4.8

33 km
61 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Aug 23, 1986 18:27
36 years ago
5.0

33 km
149 km NW of Ternate, North Maluku, IndonesiaMore
Aug 22, 1986 20:12
36 years ago
4.6

35 km
139 km NW of Ternate, North Maluku, IndonesiaMore
Aug 22, 1986 12:25
36 years ago
4.8

33 km
115 km NW of Ternate, North Maluku, IndonesiaMore
Aug 21, 1986 17:55
36 years ago
5.2

44 km
Nusa Kahatola, 92 km N of Ternate, North Maluku, IndonesiaMore
Aug 21, 1986 17:38
36 years ago
4.7

33 km
145 km NW of Ternate, North Maluku, IndonesiaMore
Aug 20, 1986 18:15
36 years ago
5.5

33 km
164 km NE of Bitung, North Sulawesi, IndonesiaMore
Aug 20, 1986 12:12
36 years ago
4.2

33 km
75 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Aug 19, 1986 13:35
36 years ago
4.4

33 km
85 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Aug 18, 1986 14:16
36 years ago
5.8

33 km
139 km NW of Ternate, North Maluku, IndonesiaMore
Aug 18, 1986 01:11
36 years ago
4.8

33 km
174 km NE of Bitung, North Sulawesi, IndonesiaMore
Aug 17, 1986 19:28
36 years ago
5.0

33 km
95 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Aug 17, 1986 18:53
36 years ago
4.9

33 km
91 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Aug 17, 1986 18:34
36 years ago
5.2

33 km
92 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Aug 17, 1986 18:25
36 years ago
4.7

33 km
104 km NW of Pulau Tutu Island, North Maluku, IndonesiaMore
Aug 17, 1986 16:58
36 years ago
4.8

33 km
75 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Aug 17, 1986 16:21
36 years ago
5.4

33 km
86 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Aug 17, 1986 16:14
36 years ago
5.1

33 km
86 km NW of Pulau Tutu Island, North Maluku, IndonesiaMore
Aug 17, 1986 16:09
36 years ago
5.0

33 km
82 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Aug 17, 1986 15:52
36 years ago
5.5

33 km
83 km NW of Pulau Tutu Island, North Maluku, IndonesiaMore
Aug 17, 1986 15:44
36 years ago
5.0

33 km
74 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Show all

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