Major magnitude 6.3 earthquake - North Pacific Ocean, 49 mi southeast of Tigalda Island, Aleutians East County, Alaska, USA, on Saturday, 14 October 1933 at 22:19 (GMT)

Major magnitude 6.3 earthquake - North Pacific Ocean, 49 mi southeast of Tigalda Island, Aleutians East County, Alaska, USA, on Saturday, 14 October 1933 at 22:19 (GMT)

Major magnitude 6.3 earthquake at 0 km depth

Date & time: 14 Oct 1933 22:19:01 UTC
Magnitude: 6.3
Depth: 0.0 km
Epicenter latitude / longitude: 53.75°N / 164°W (North Pacific Ocean, Alaska, United States)
Nearest volcano: Westdahl (95 km / 59 mi)
Nearby towns and cities:
124 km (77 mi) ESE of Akutan (pop: 1,040) --> See nearby quakes!
129 km (80 mi) SSW of False Pass (pop: 40) --> See nearby quakes!
167 km (104 mi) E of Unalaska (pop: 4,490) --> See nearby quakes!
180 km (112 mi) SSW of Cold Bay (pop: 123) --> See nearby quakes!
182 km (113 mi) SW of King Cove (pop: 1,010) --> See nearby quakes!
287 km (178 mi) SW of Sand Point (pop: 1,060) --> See nearby quakes!
308 km (191 mi) SW of Nelson Lagoon (pop: 52) --> See nearby quakes!
393 km (244 mi) SW of Perryville (pop: 113) --> See nearby quakes!
435 km (270 mi) SW of Chignik Lake (pop: 73) --> See nearby quakes!
450 km (280 mi) SW of Chignik Lagoon (pop: 78) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.8 x 1014 joules (49.4 gigawatt hours, equivalent to 42502 tons of TNT or 2.7 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 6.3kmUnimak 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

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Recorded aftershocks, latest first (0 quakes):
So far, no aftershocks have been registered.
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Earlier earthquakes in the same area

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