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)
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Major magnitude 7.3 earthquake at 35 km depth
Date & time: 7 Jul 1929 21:23:17 UTC
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
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.
|M 7.3||35 km||Andreanof Islands, Aleutian Islands, Alaska (USA)||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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More infoRecorded aftershocks, latest first (2 quakes):
- 26 Apr 1930 16:18 UTC| M 6.6 |35 km (21.7 mi) depth|188 km (117 mi) distance| USGS | Very strong mag. 6.6 earthquake - Bering Sea, USA, on Saturday, 26 April 1930 at 16:18 (GMT)
- 02 Feb 1930 14:56 UTC| M 6.4 |25 km (15.5 mi) depth|167 km (104 mi) distance| USGS | Very strong mag. 6.4 earthquake - Bering Sea, USA, on Sunday, 2 February 1930 at 14:56 (GMT)