Major magnitude 6.8 earthquake - Gulf of Alaska, 17 mi south of Sitkinak Island, Kodiak Island County, Alaska, USA, on Saturday, 29 November 1952 at 23:46 (GMT)

Major magnitude 6.8 earthquake - Gulf of Alaska, 17 mi south of Sitkinak Island, Kodiak Island County, Alaska, USA, on Saturday, 29 November 1952 at 23:46 (GMT)

Major magnitude 6.8 earthquake at 20 km depth

Date & time: 29 Nov 1952 23:46:32 UTC
Magnitude: 6.8
Depth: 20.0 km
Epicenter latitude / longitude: 56.304°N / 154.056°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Kialagvik (192 km / 119 mi)
Nearby towns and cities:
72 km (45 mi) S of Akhiok (pop: 72) --> See nearby quakes!
110 km (68 mi) SSW of Old Harbor (pop: 221) --> See nearby quakes!
138 km (85 mi) S of Larsen Bay (pop: 88) --> See nearby quakes!
185 km (115 mi) SSW of Kodiak Station (pop: 1,300) --> See nearby quakes!
193 km (120 mi) SSW of Kodiak (pop: 6,250) --> See nearby quakes!
400 km (248 mi) SSW of Homer (pop: 5,520) --> See nearby quakes!
408 km (253 mi) SSW of Anchor Point (pop: 1,930) --> See nearby quakes!
415 km (258 mi) SSW of Fritz Creek (pop: 1,930) --> See nearby quakes!
417 km (259 mi) ENE of Sand Point (pop: 1,060) --> See nearby quakes!
501 km (312 mi) SW 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 6.820 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 (1 quakes):
  • 12 Dec 1952 00:47 UTC
    | M 5.9 |
    25 km (15.5 mi) depth
    |
    20 km (12 mi) distance
    | USGS | Details

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Earlier earthquakes in the same area

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