Major magnitude. 7.8 earthquake - South of the Aleutian Islands (USA) on Thursday, 7 March 1929 at 01:34 (GMT)

Major magnitude. 7.8 earthquake - South of the Aleutian Islands (USA) on Thursday, 7 March 1929 at 01:34 (GMT)

Major magnitude 7.8 earthquake at 15 km depth

Date & time: 7 Mar 1929 01:34:42 UTC
Magnitude: 7.8
Depth: 15.0 km
Epicenter latitude / longitude: 50.852°N / 169.753°W (United States)
Nearest volcano: Yunaska (208 km / 129 mi)
Nearby towns and cities:
240 km (149 mi) SSW of Nikolski (pop: 18) --> See nearby quakes!
342 km (213 mi) ESE of Atka (pop: 64) --> See nearby quakes!
401 km (249 mi) SW of Unalaska (pop: 4,490) --> See nearby quakes!
453 km (282 mi) SW of Akutan (pop: 1,040) --> See nearby quakes!
616 km (383 mi) SW of False Pass (pop: 40) --> See nearby quakes!
6938 km (4311 mi) NW of Washington (pop: 601,700) --> See nearby quakes!
6938 km (4311 mi) NW of Washington DC (pop: 601,700) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 3.2 x 1016 joules (8784 gigawatt hours, equivalent to 7.6 x 106 tons of TNT or 472.4 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 7.815 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 of the 7.8 quake South of the Aleutian Islands (USA) 7 March 1929 01:34 GMT

More info
Recorded aftershocks, latest first (5 quakes):
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Earlier earthquakes in the same area

Major magnitude. 7.8 earthquake - South of the Aleutian Islands (USA) on Thursday, 7 March 1929 at 01:34 (GMT)
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