Strong mag. 6.0 earthquake - Japan Sea, 85 km west of Noshiro, Akita, Japan, on Thursday, 9 June 1983 at 12:49 (GMT)

Strong mag. 6.0 earthquake - Japan Sea, 85 km west of Noshiro, Akita, Japan, on Thursday, 9 June 1983 at 12:49 (GMT)

Strong magnitude 6.0 earthquake at 31 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: 9 Jun 1983 12:49:03 UTC
Magnitude: 6
Depth: 30.6 km
Epicenter latitude / longitude: 40.237°N / 139.023°E (Japan Sea, Japan)
Nearest volcano: Megata (68 km / 42 mi)
Nearby towns and cities:
85 km (53 mi) W of Noshiro (pop: 51,100) --> See nearby quakes!
89 km (55 mi) WNW of Tennō (Katagami) (pop: 22,700) --> See nearby quakes!
110 km (68 mi) WNW of Akita (pop: 320,100) --> See nearby quakes!
114 km (71 mi) W of Takanosu (Kitaakita) (pop: 20,500) --> See nearby quakes!
129 km (80 mi) WSW of Hirosaki (pop: 175,000) --> See nearby quakes!
130 km (81 mi) W of Ōdate (pop: 64,500) --> See nearby quakes!
136 km (84 mi) WSW of Goshogawara (pop: 49,100) --> See nearby quakes!
140 km (87 mi) WSW of Kuroishi (pop: 38,600) --> See nearby quakes!
369 km (230 mi) SSW of Sapporo (pop: 1,883,000) --> See nearby quakes!
509 km (316 mi) N of Tokyo (pop: 8,336,600) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 6.3 x 1013 joules (17.5 gigawatt hours, equivalent to 15080 tons of TNT or 0.9 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.
Mag.DepthLocationSource
6.031 kmnear the west coast of Honshu, JapanUSGS
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.
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Aftershocks

More info
Recorded aftershocks, latest first (26 quakes):
  • 23 Sep 1983 11:36 UTC
    | M 5.0 |
    24.9 km (15.5 mi) depth
    |
    58 km (36 mi) distance
    | USGS | Details
  • 18 Sep 1983 13:12 UTC
    | M 4.8 |
    41.2 km (25.6 mi) depth
    |
    60 km (38 mi) distance
    | USGS | Details
  • 25 Jul 1983 23:17 UTC
    | M 5.0 |
    33 km (20.5 mi) depth
    |
    11 km (7 mi) distance
    | USGS | Details
  • 25 Jul 1983 06:30 UTC
    | M 4.5 |
    22 km (13.7 mi) depth
    |
    37 km (23 mi) distance
    | USGS | Details
  • 24 Jul 1983 19:07 UTC
    | M 4.3 |
    33 km (20.5 mi) depth
    |
    60 km (37 mi) distance
    | USGS | Details
  • 24 Jul 1983 15:36 UTC
    | M 4.3 |
    33 km (20.5 mi) depth
    |
    21 km (13 mi) distance
    | USGS | Details
  • 22 Jul 1983 12:16 UTC
    | M 4.8 |
    33 km (20.5 mi) depth
    |
    7 km (4 mi) distance
    | USGS | Details
  • 20 Jul 1983 21:11 UTC
    | M 4.7 |
    33 km (20.5 mi) depth
    |
    18 km (11 mi) distance
    | USGS | Details
  • 17 Jul 1983 17:28 UTC
    | M 4.8 |
    56.4 km (35 mi) depth
    |
    50 km (31 mi) distance
    | USGS | Details
  • 02 Jul 1983 05:32 UTC
    | M 5.1 |
    17.3 km (10.7 mi) depth
    |
    24 km (15 mi) distance
    | USGS | Details
  • 01 Jul 1983 23:32 UTC
    | M 4.7 |
    33 km (20.5 mi) depth
    |
    29 km (18 mi) distance
    | USGS | Details
  • 29 Jun 1983 05:11 UTC
    | M 5.0 |
    21.6 km (13.4 mi) depth
    |
    12 km (7 mi) distance
    | USGS | Details
  • 24 Jun 1983 02:09 UTC
    | M 4.3 |
    33 km (20.5 mi) depth
    |
    45 km (28 mi) distance
    | USGS | Details
  • 22 Jun 1983 20:15 UTC
    | M 5.4 |
    17.2 km (10.7 mi) depth
    |
    18 km (11 mi) distance
    | USGS | Details
  • 19 Jun 1983 04:35 UTC
    | M 4.8 |
    30.9 km (19.2 mi) depth
    |
    23 km (15 mi) distance
    | USGS | Details
  • 18 Jun 1983 22:13 UTC
    | M 5.5 |
    21.3 km (13.2 mi) depth
    |
    10 km (6 mi) distance
    | USGS | Details
    • Show all

Earlier earthquakes in the same area

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