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Strong mag. 6.1 earthquake - 114 km west of Pulau Tutu Island, North Maluku, Indonesia, on Wednesday, March 18, 1987 at 00:22 GMT

Strong mag. 6.1 earthquake - 114 km west of Pulau Tutu Island, North Maluku, Indonesia, on Wednesday, March 18, 1987 at 00:22 GMT

Strong magnitude 6.1 earthquake at 30 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: Mar 18, 1987 00:22:49 UTC
Magnitude: 6.1
Depth: 29.7 km
Epicenter latitude / longitude: 2.114°N / 126.571°E (Molucca Sea, Indonesia)
Antipode: 2.114°S / 53.429°W
Nearest volcano: Ruang (129 km / 80 mi)
Nearby towns and cities:
166 km (103 mi) WNW of Tobelo (Kabupaten Halmahera Utara) (pop: 10,000) --> See nearby quakes!
170 km (106 mi) ENE of Bitung (pop: 137,400) --> See nearby quakes!
173 km (107 mi) NNW of Ternate (pop: 101,700) --> See nearby quakes!
188 km (117 mi) NW of Sofifi (Kota Tidore Kepulauan) (pop: 36,200) --> See nearby quakes!
191 km (118 mi) ENE of Laikit, Laikit II (Dimembe) (Kabupaten Minahasa Utara) (pop: 8,000) --> See nearby quakes!
204 km (127 mi) ENE of Manado (pop: 451,900) --> See nearby quakes!
205 km (127 mi) ENE of Tondano (Kabupaten Minahasa) (pop: 33,300) --> See nearby quakes!
216 km (134 mi) ENE of Tomohon (pop: 27,600) --> See nearby quakes!
386 km (240 mi) SSE of Sarangani (Davao del Sur, Philippines) (pop: 7,510) --> See nearby quakes!
428 km (266 mi) ENE of Gorontalo (pop: 144,200) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 8.9 x 1013 joules (24.8 gigawatt hours, equivalent to 21301 tons of TNT or 1.3 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
6.130 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 (18 quakes)

Date and timeMag
Depth
LocationDetails
Aug 26, 1987 19:32
35 years ago
5.2

45 km
110 km NW of Pulau Tutu Island, North Maluku, IndonesiaMore
Aug 9, 1987 15:06
35 years ago
4.4

33 km
108 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Jul 12, 1987 20:29
35 years ago
5.2

77 km
162 km NE of Bitung, North Sulawesi, IndonesiaMore
Jul 12, 1987 08:50
35 years ago
4.8

33 km
154 km E of Bitung, North Sulawesi, IndonesiaMore
Jul 12, 1987 08:18
35 years ago
5.2

33 km
159 km NE of Bitung, North Sulawesi, IndonesiaMore
Jun 22, 1987 03:07
35 years ago
4.7

33 km
122 km E of Bitung, North Sulawesi, IndonesiaMore
Jun 21, 1987 00:02
35 years ago
5.5

70 km
90 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Jun 7, 1987 02:42
35 years ago
4.6

33 km
97 km W of Pulau Laba Island, North Maluku, IndonesiaMore
May 31, 1987 21:18
35 years ago
4.7

102 km
126 km NW of Ternate, North Maluku, IndonesiaMore
May 26, 1987 22:26
35 years ago
4.7

33 km
142 km NW of Ternate, North Maluku, IndonesiaMore
May 4, 1987 06:24
35 years ago
5.2

64 km
105 km W of Pulau Tutu Island, North Maluku, IndonesiaMore
Apr 21, 1987 01:52
35 years ago
4.6

33 km
105 km NW of Pulau Laba Island, North Maluku, IndonesiaMore
Apr 16, 1987 07:01
35 years ago
5.1

126 km
51 km NW of Pulau Tutu Island, North Maluku, IndonesiaMore
Apr 7, 1987 05:57
35 years ago
4.8

117 km
113 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Mar 31, 1987 15:36
35 years ago
4.8

89 km
98 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Mar 29, 1987 23:24
35 years ago
5.1

69 km
73 km W of Pulau Laba Island, North Maluku, IndonesiaMore
Mar 25, 1987 22:14
35 years ago
4.6

71 km
127 km E of Pulau Tahulandang Island, North Sulawesi, IndonesiaMore
Mar 25, 1987 15:32
35 years ago
4.4

84 km
145 km E of Bitung, North Sulawesi, IndonesiaMore

Earlier earthquakes in the same area

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