Moderate mag. 5.5 earthquake - Halmahera, Indonesia, on Monday, 7 November 1983 at 16:46 (GMT)

Moderate mag. 5.5 earthquake - Halmahera, Indonesia, on Monday, 7 November 1983 at 16:46 (GMT)

Moderate magnitude 5.5 earthquake at 57 km depth

Date & time: 7 Nov 1983 16:46:14 UTC
Magnitude: 5.5
Depth: 56.8 km
Epicenter latitude / longitude: 1.404°N / 128.137°E (Indonesia)
Nearest volcano: Dukono (42 km / 26 mi)
Nearby towns and cities:
39 km (24 mi) SSE of Tobelo (Kabupaten Halmahera Utara) (pop: 10,000) --> See nearby quakes!
98 km (61 mi) NE of Sofifi (Kota Tidore Kepulauan) (pop: 36,200) --> See nearby quakes!
108 km (67 mi) NE of Ternate (pop: 101,700) --> See nearby quakes!
328 km (204 mi) E of Bitung (pop: 137,400) --> See nearby quakes!
352 km (219 mi) E of Laikit, Laikit II (Dimembe) (Kabupaten Minahasa Utara) (pop: 8,000) --> See nearby quakes!
359 km (223 mi) E of Tondano (Kabupaten Minahasa) (pop: 33,300) --> See nearby quakes!
366 km (227 mi) E of Manado (pop: 451,900) --> See nearby quakes!
371 km (230 mi) E of Tomohon (pop: 27,600) --> See nearby quakes!
430 km (267 mi) NW of Sorong (pop: 125,500) --> See nearby quakes!
2512 km (1561 mi) ENE of Jakarta (pop: 8,540,100) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.1 x 1013 joules (3.12 gigawatt hours, equivalent to 2682 tons of TNT or 0.2 atomic bombs!) More info
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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.
MagnitudeDepthLocationSource
M 5.557 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 yet. If you felt it be the first to report it!
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Aftershocks of the 5.5 quake Halmahera, Indonesia, 7 November 1983 16:46 GMT

More info
Recorded aftershocks, latest first (11 quakes):
  • 04 Jan 1984 02:42 UTC
    | M 5.7 |
    44.1 km (27.4 mi) depth
    |
    2 km (1 mi) distance
    | USGS | Details
  • 14 Nov 1983 18:55 UTC
    | M 4.9 |
    57.3 km (35.6 mi) depth
    |
    12 km (7 mi) distance
    | USGS | Details
  • 09 Nov 1983 02:36 UTC
    | M 5.0 |
    40.7 km (25.3 mi) depth
    |
    18 km (11 mi) distance
    | USGS | Details
  • 08 Nov 1983 21:53 UTC
    | M 5.4 |
    53.7 km (33.4 mi) depth
    |
    12 km (8 mi) distance
    | USGS | Details
  • 08 Nov 1983 04:40 UTC
    | M 5.0 |
    37.7 km (23.4 mi) depth
    |
    13 km (8 mi) distance
    | USGS | Details
  • 08 Nov 1983 01:19 UTC
    | M 4.6 |
    33 km (20.5 mi) depth
    |
    8 km (5 mi) distance
    | USGS | Details
  • 07 Nov 1983 22:25 UTC
    | M 5.1 |
    34.5 km (21.4 mi) depth
    |
    17 km (11 mi) distance
    | USGS | Details
  • 07 Nov 1983 21:44 UTC
    | M 5.0 |
    44 km (27.3 mi) depth
    |
    24 km (15 mi) distance
    | USGS | Details
  • 07 Nov 1983 20:12 UTC
    | M 5.6 |
    36.7 km (22.8 mi) depth
    |
    15 km (9 mi) distance
    | USGS | Details
  • 07 Nov 1983 19:05 UTC
    | M 5.3 |
    42.4 km (26.3 mi) depth
    |
    4 km (2 mi) distance
    | USGS | Details
  • 07 Nov 1983 18:17 UTC
    | M 5.2 |
    58.5 km (36.4 mi) depth
    |
    12 km (8 mi) distance
    | USGS | Details

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Earlier earthquakes in the same area

Moderate mag. 5.5 earthquake - Halmahera, Indonesia, on Monday, 7 November 1983 at 16:46 (GMT)
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