Major magnitude 6.8 earthquake - Gulf of Alaska, 103 mi south of Kodiak, Alaska, USA, on Thursday, 19 June 1986 at 09:09 (GMT)

Major magnitude 6.8 earthquake - Gulf of Alaska, 103 mi south of Kodiak, Alaska, USA, on Thursday, 19 June 1986 at 09:09 (GMT)

Major magnitude 6.8 earthquake at 17 km depth

Date & time: 19 Jun 1986 09:09:09 UTC
Magnitude: 6.8
Depth: 16.7 km
Epicenter latitude / longitude: 56.331°N / 152.914°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Unnamed 57.87°N/155.42°W (228 km / 142 mi)
Nearby towns and cities:
100 km (62 mi) SSE of Old Harbor (pop: 221) --> See nearby quakes!
103 km (64 mi) SE of Akhiok (pop: 72) --> See nearby quakes!
151 km (94 mi) S of Womens Bay (pop: 719) --> See nearby quakes!
161 km (100 mi) S of Kodiak Station (pop: 1,300) --> See nearby quakes!
165 km (103 mi) S of Kodiak (pop: 6,250) --> See nearby quakes!
377 km (234 mi) SSW of Homer (pop: 5,520) --> See nearby quakes!
388 km (241 mi) S of Anchor Point (pop: 1,930) --> See nearby quakes!
391 km (243 mi) SSW of Fritz Creek (pop: 1,930) --> See nearby quakes!
459 km (285 mi) SSW of Cohoe (pop: 1,360) --> See nearby quakes!
466 km (290 mi) SSW of Lowell Point (pop: 2,790) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1 x 1015 joules (278 gigawatt hours, equivalent to 2.4 x 105 tons of TNT or 14.9 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.
MagnitudeDepthLocationSource
M 6.817 kmKodiak Island region, Alaska (USA)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.
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Aftershocks

More info
Recorded aftershocks, latest first (24 quakes):
  • 28 Oct 1986 08:15 UTC
    | M 3.0 |
    33 km (20.5 mi) depth
    |
    65 km (40 mi) distance
    | USGS | Details
  • 28 Oct 1986 03:11 UTC
    | M 3.3 |
    33 km (20.5 mi) depth
    |
    76 km (47 mi) distance
    | USGS | Details
  • 24 Oct 1986 11:51 UTC
    | M 4.3 |
    33 km (20.5 mi) depth
    |
    35 km (22 mi) distance
    | USGS | Details
  • 23 Oct 1986 12:40 UTC
    | M 4.3 |
    33 km (20.5 mi) depth
    |
    72 km (45 mi) distance
    | USGS | Details
  • 01 Oct 1986 10:43 UTC
    | M 3.7 |
    44.4 km (27.6 mi) depth
    |
    130 km (81 mi) distance
    | USGS | Details
  • 23 Sep 1986 00:24 UTC
    | M 4.5 |
    33 km (20.5 mi) depth
    |
    39 km (24 mi) distance
    | USGS | Details
  • 22 Sep 1986 08:07 UTC
    | M 4.3 |
    33 km (20.5 mi) depth
    |
    52 km (33 mi) distance
    | USGS | Details
  • 16 Sep 1986 20:57 UTC
    | M 5.9 |
    33 km (20.5 mi) depth
    |
    44 km (27 mi) distance
    | USGS | Details
  • 14 Sep 1986 01:11 UTC
    | M 4.5 |
    33 km (20.5 mi) depth
    |
    36 km (23 mi) distance
    | USGS | Details
  • 13 Sep 1986 04:19 UTC
    | M 4.0 |
    33 km (20.5 mi) depth
    |
    35 km (22 mi) distance
    | USGS | Details
  • 13 Sep 1986 03:38 UTC
    | M 3.4 |
    33 km (20.5 mi) depth
    |
    23 km (14 mi) distance
    | USGS | Details
  • 13 Sep 1986 03:11 UTC
    | M 4.8 |
    33 km (20.5 mi) depth
    |
    50 km (31 mi) distance
    | USGS | Details
  • 13 Sep 1986 03:05 UTC
    | M 3.8 |
    33 km (20.5 mi) depth
    |
    43 km (27 mi) distance
    | USGS | Details
  • 13 Sep 1986 00:41 UTC
    | M 4.6 |
    33 km (20.5 mi) depth
    |
    58 km (36 mi) distance
    | USGS | Details
  • 12 Sep 1986 23:57 UTC
    | M 6.5 |
    31.3 km (19.4 mi) depth
    |
    34 km (21 mi) distance
    | USGS | Very strong mag. 6.5 earthquake - Gulf of Alaska, 116 mi south of Kodiak, Alaska, USA, on Friday, 12 September 1986 at 23:57 (GMT)
  • 08 Aug 1986 13:41 UTC
    | M 3.5 |
    33 km (20.5 mi) depth
    |
    28 km (17 mi) distance
    | USGS | Details
    • Show all

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Earlier earthquakes in the same area

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