Very strong mag. 6.6 earthquake - North Pacific Ocean, 35 mi southeast of Tigalda Island, Aleutians East County, Alaska, USA, on Wednesday, 19 February 2003 at 03:32 (GMT)

Very strong mag. 6.6 earthquake - North Pacific Ocean, 35 mi southeast of Tigalda Island, Aleutians East County, Alaska, USA, on Wednesday, 19 February 2003 at 03:32 (GMT)

Very strong magnitude 6.6 earthquake at 19 km depth

Date & time: 19 Feb 2003 03:32:36 UTC
Magnitude: 6.6
Depth: 19.0 km
Epicenter latitude / longitude: 53.645°N / 164.643°W (North Pacific Ocean, Alaska, United States)
Nearest volcano: Gilbert (94 km / 58 mi)
Nearby towns and cities:
92 km (57 mi) SE of Akutan (pop: 1,040) --> See nearby quakes!
127 km (79 mi) E of Unalaska (pop: 4,490) --> See nearby quakes!
157 km (97 mi) SSW of False Pass (pop: 40) --> See nearby quakes!
212 km (132 mi) SW of Cold Bay (pop: 123) --> See nearby quakes!
218 km (135 mi) SW of King Cove (pop: 1,010) --> See nearby quakes!
291 km (181 mi) ENE of Nikolski (pop: 18) --> See nearby quakes!
327 km (203 mi) SW of Sand Point (pop: 1,060) --> See nearby quakes!
342 km (213 mi) SW of Nelson Lagoon (pop: 52) --> See nearby quakes!
433 km (269 mi) SW of Perryville (pop: 113) --> See nearby quakes!
474 km (295 mi) SW of Chignik Lake (pop: 73) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 5 x 1014 joules (139 gigawatt hours, equivalent to 1.2 x 105 tons of TNT or 7.5 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 6.619 kmUnimak 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.
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 (556 quakes):
  • 17 Aug 2003 21:00 UTC
    | M 2.0 |
    20 km (12.4 mi) depth
    |
    89 km (55 mi) distance
    | USGS | Details
  • 17 Aug 2003 00:55 UTC
    | M 1.8 |
    3.6 km (2.2 mi) depth
    |
    77 km (48 mi) distance
    | USGS | Details
  • 16 Aug 2003 18:18 UTC
    | M 2.3 |
    5.7 km (3.5 mi) depth
    |
    78 km (48 mi) distance
    | USGS | Details
  • 16 Aug 2003 17:52 UTC
    | M 1.4 |
    4.7 km (2.9 mi) depth
    |
    69 km (43 mi) distance
    | USGS | Details
  • 16 Aug 2003 00:12 UTC
    | M 3.5 |
    60.7 km (37.7 mi) depth
    |
    52 km (32 mi) distance
    | USGS | Details
  • 14 Aug 2003 12:39 UTC
    | M 1.4 |
    14 km (8.7 mi) depth
    |
    95 km (59 mi) distance
    | USGS | Details
  • 13 Aug 2003 23:29 UTC
    | M 2.3 |
    21.6 km (13.4 mi) depth
    |
    43 km (27 mi) distance
    | USGS | Details
  • 13 Aug 2003 23:27 UTC
    | M 2.4 |
    21.8 km (13.5 mi) depth
    |
    28 km (17 mi) distance
    | USGS | Details
  • 13 Aug 2003 22:58 UTC
    | M 4.5 |
    95.3 km (59.2 mi) depth
    |
    71 km (44 mi) distance
    | USGS | Details
  • 13 Aug 2003 22:38 UTC
    | M 2.0 |
    32.1 km (19.9 mi) depth
    |
    29 km (18 mi) distance
    | USGS | Details
  • 13 Aug 2003 09:39 UTC
    | M 2.1 |
    2.5 km (1.6 mi) depth
    |
    46 km (29 mi) distance
    | USGS | Details
  • 12 Aug 2003 15:04 UTC
    | M 3.8 |
    67 km (41.6 mi) depth
    |
    57 km (35 mi) distance
    | USGS | Details
  • 12 Aug 2003 02:33 UTC
    | M 2.3 |
    14.6 km (9.1 mi) depth
    |
    47 km (29 mi) distance
    | USGS | Details
  • 11 Aug 2003 18:20 UTC
    | M 1.8 |
    1 km (0.6 mi) depth
    |
    100 km (62 mi) distance
    | USGS | Details
  • 11 Aug 2003 11:27 UTC
    | M 1.5 |
    15.6 km (9.7 mi) depth
    |
    75 km (47 mi) distance
    | USGS | Details
  • 11 Aug 2003 05:36 UTC
    | M 1.8 |
    14.9 km (9.3 mi) depth
    |
    14 km (9 mi) distance
    | USGS | Details
    • Show all

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Earlier earthquakes in the same area

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