Strong mag. 6.6 earthquake - South of Alaska (USA) on Wednesday, 9 October 1985 at 09:33 (GMT)

Strong mag. 6.6 earthquake - South of Alaska (USA) on Wednesday, 9 October 1985 at 09:33 (GMT)

Strong magnitude 6.6 earthquake at 30 km depth

Date & time: 9 Oct 1985 09:33:32 UTC
Magnitude: 6.6
Depth: 30.2 km
Epicenter latitude / longitude: 54.765°N / 159.613°W (Alaska, United States)
Nearest volcano: Stepovak Bay 1 (126 km / 78 mi)
Nearby towns and cities:
85 km (53 mi) SE of Sand Point (pop: 1,060) --> See nearby quakes!
131 km (81 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
170 km (106 mi) SE of Nelson Lagoon (pop: 52) --> See nearby quakes!
174 km (108 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
176 km (109 mi) E of King Cove (pop: 1,010) --> See nearby quakes!
186 km (116 mi) SSW of Chignik (pop: 87) --> See nearby quakes!
405 km (251 mi) ENE of Akutan (pop: 1,040) --> See nearby quakes!
460 km (286 mi) ENE of Unalaska (pop: 4,490) --> See nearby quakes!
6138 km (3814 mi) NW of Washington (District of Columbia) (pop: 601,700) --> See nearby quakes!
6138 km (3814 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 5 x 1014 joules (139 gigawatt hours, equivalent to 1.2 x 105 tons of TNT or 7.5 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 6.630 kmsouth of 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.
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 6.6 quake South of Alaska (USA) 9 October 1985 09:33 GMT

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Recorded aftershocks, latest first (4 quakes):
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Earlier earthquakes in the same area

Strong mag. 6.6 earthquake - South of Alaska (USA) on Wednesday, 9 October 1985 at 09:33 (GMT)
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