Major magnitude 7.3 earthquake - Bering Sea, 23 mi south of Tannaga Island, Aleutians West County, Alaska, USA, on Sunday, 7 July 1929 at 21:23 (GMT)

Major magnitude 7.3 earthquake - Bering Sea, 23 mi south of Tannaga Island, Aleutians West County, Alaska, USA, on Sunday, 7 July 1929 at 21:23 (GMT)

Major magnitude 7.3 earthquake at 35 km depth

Date & time: 7 Jul 1929 21:23:17 UTC
Magnitude: 7.3
Depth: 35.0 km
Epicenter latitude / longitude: 51.474°N / 177.771°W (Bering Sea, Alaska, United States)
Nearest volcano: Takawangha (47 km / 29 mi)
Nearby towns and cities:
90 km (56 mi) WSW of Adak (pop: 332) --> See nearby quakes!
258 km (160 mi) WSW of Atka (pop: 64) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 5.6 x 1015 joules (1562 gigawatt hours, equivalent to 1.3 x 106 tons of TNT or 84 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 7.335 kmAndreanof Islands, Aleutian Islands, 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

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Recorded aftershocks, latest first (2 quakes):
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Earlier earthquakes in the same area

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