Very strong mag. 6.0 earthquake - North Pacific Ocean, 147 mi south of Unalaska, Aleutians West (CA) County, Alaska, USA, on Saturday, 7 August 2004 at 09:30 (GMT)

Very strong mag. 6.0 earthquake - North Pacific Ocean, 147 mi south of Unalaska, Aleutians West (CA) County, Alaska, USA, on Saturday, 7 August 2004 at 09:30 (GMT)

Very strong magnitude 6.0 earthquake at 8 km depth

Date & time: 7 Aug 2004 09:30:16 UTC
Magnitude: 6
Depth: 8.0 km
Epicenter latitude / longitude: 51.753°N / 166.313°W (North Pacific Ocean, United States)
Nearest volcano: Recheschnoi (217 km / 135 mi)
Nearby towns and cities:
218 km (135 mi) SE of Nikolski (pop: 18) --> See nearby quakes!
236 km (147 mi) S of Unalaska (pop: 4,490) --> See nearby quakes!
267 km (166 mi) S of Akutan (pop: 1,040) --> See nearby quakes!
395 km (246 mi) SSW of False Pass (pop: 40) --> See nearby quakes!
450 km (279 mi) SSW of Cold Bay (pop: 123) --> See nearby quakes!
453 km (282 mi) SW of King Cove (pop: 1,010) --> See nearby quakes!
553 km (344 mi) SW of Sand Point (pop: 1,060) --> 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.
MagnitudeDepthLocationSource
M 6.08 kmsouth of the Aleutian Islands (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.
There are no user reports for this quake yet. If you felt it be the first to report it!
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Aftershocks

More info
Recorded aftershocks, latest first (38 quakes):
  • 01 Feb 2005 06:20 UTC
    | M 2.9 |
    20 km (12.4 mi) depth
    |
    14 km (9 mi) distance
    | USGS | Details
  • 30 Jan 2005 14:14 UTC
    | M 2.5 |
    25.7 km (16 mi) depth
    |
    48 km (30 mi) distance
    | USGS | Details
  • 18 Jan 2005 10:45 UTC
    | M 2.8 |
    30.8 km (19.1 mi) depth
    |
    60 km (38 mi) distance
    | USGS | Details
  • 28 Sep 2004 02:55 UTC
    | M 2.8 |
    43.2 km (26.8 mi) depth
    |
    23 km (14 mi) distance
    | USGS | Details
  • 05 Sep 2004 13:30 UTC
    | M 2.6 |
    43.8 km (27.2 mi) depth
    |
    13 km (8 mi) distance
    | USGS | Details
  • 29 Aug 2004 13:54 UTC
    | M 2.7 |
    34 km (21.1 mi) depth
    |
    4 km (3 mi) distance
    | USGS | Details
  • 20 Aug 2004 09:35 UTC
    | M 2.5 |
    1.2 km (0.7 mi) depth
    |
    5 km (3 mi) distance
    | USGS | Details
  • 20 Aug 2004 08:50 UTC
    | M 2.8 |
    33 km (20.5 mi) depth
    |
    2 km (1 mi) distance
    | USGS | Details
  • 20 Aug 2004 08:16 UTC
    | M 2.7 |
    32.7 km (20.3 mi) depth
    |
    4 km (2 mi) distance
    | USGS | Details
  • 20 Aug 2004 05:36 UTC
    | M 4.8 |
    27.3 km (17 mi) depth
    |
    7 km (5 mi) distance
    | USGS | Details
  • 20 Aug 2004 03:52 UTC
    | M 2.6 |
    1 km (0.6 mi) depth
    |
    24 km (15 mi) distance
    | USGS | Details
  • 12 Aug 2004 21:45 UTC
    | M 2.9 |
    17.5 km (10.9 mi) depth
    |
    7 km (4 mi) distance
    | USGS | Details
  • 12 Aug 2004 01:03 UTC
    | M 3.2 |
    31.3 km (19.4 mi) depth
    |
    9 km (6 mi) distance
    | USGS | Details
  • 11 Aug 2004 08:40 UTC
    | M 2.2 |
    47 km (29.2 mi) depth
    |
    13 km (8 mi) distance
    | USGS | Details
  • 11 Aug 2004 03:57 UTC
    | M 2.0 |
    36.9 km (22.9 mi) depth
    |
    7 km (4 mi) distance
    | USGS | Details
  • 11 Aug 2004 03:11 UTC
    | M 2.3 |
    47 km (29.2 mi) depth
    |
    14 km (8 mi) distance
    | USGS | Details
    • Show all

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Earlier earthquakes in the same area

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