Strong mag. 6.0 earthquake - North Pacific Ocean, 60 mi south of Sanak Island, Aleutians East County, Alaska, USA, on Sunday, 22 May 1988 at 09:39 (GMT)

Strong mag. 6.0 earthquake - North Pacific Ocean, 60 mi south of Sanak Island, Aleutians East County, Alaska, USA, on Sunday, 22 May 1988 at 09:39 (GMT)

Strong magnitude 6.0 earthquake at 33 km depth

Date & time: 22 May 1988 09:39:55 UTC
Magnitude: 6
Depth: 33.0 km
Epicenter latitude / longitude: 53.619°N / 163.267°W (North Pacific Ocean, Alaska, United States)
Nearest volcano: Isanotski (131 km / 81 mi)
Nearby towns and cities:
138 km (86 mi) S of False Pass (pop: 40) --> See nearby quakes!
172 km (107 mi) SSW of King Cove (pop: 1,010) --> See nearby quakes!
174 km (108 mi) ESE of Akutan (pop: 1,040) --> See nearby quakes!
178 km (110 mi) S of Cold Bay (pop: 123) --> See nearby quakes!
217 km (135 mi) E of Unalaska (pop: 4,490) --> See nearby quakes!
262 km (163 mi) SW of Sand Point (pop: 1,060) --> See nearby quakes!
296 km (184 mi) SSW of Nelson Lagoon (pop: 52) --> See nearby quakes!
367 km (228 mi) SW of Perryville (pop: 113) --> See nearby quakes!
411 km (255 mi) SW of Chignik Lake (pop: 73) --> See nearby quakes!
425 km (264 mi) SW of Chignik Lagoon (pop: 78) --> 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 6.033 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 (3 quakes):
  • 08 Oct 1988 02:19 UTC
    | M 5.1 |
    33 km (20.5 mi) depth
    |
    16 km (10 mi) distance
    | USGS | Details
  • 22 May 1988 13:37 UTC
    | M 4.5 |
    33 km (20.5 mi) depth
    |
    20 km (13 mi) distance
    | USGS | Details
  • 22 May 1988 11:38 UTC
    | M 4.5 |
    33 km (20.5 mi) depth
    |
    7 km (4 mi) distance
    | USGS | Details

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Earlier earthquakes in the same area

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