Mag. 3.1 earthquake - Gulf of Alaska, 61 mi southeast of King Cove, Alaska, USA, on Friday, 11 September 2020 at 01:00 (GMT) -
This quake was likely an aftershock of the 7.8 quake Gulf of Alaska, 31 mi east of Simeonof Island, Aleutians East County, Alaska, USA, 22 July 2020 06:12 GMT, which had occurred 7 weeks earlier.
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Minor magnitude 3.1 earthquake at 10 km depth
11 Sep 17:56 UTC: First to report: USGS after 17 hours.
11 Sep 20:50: Magnitude recalculated from 2.8 to 3.1. Hypocenter depth recalculated from 8.1 to 10.0 km (from 5 to 6.2 mi). Epicenter location corrected by 3.4 km (2.1 mi) towards SE.
11 Sep 20:50: Magnitude recalculated from 2.8 to 3.1. Hypocenter depth recalculated from 8.1 to 10.0 km (from 5 to 6.2 mi). Epicenter location corrected by 3.4 km (2.1 mi) towards SE.
Magnitude: 3.1
Depth: 10.0 km
Epicenter latitude / longitude: 54.4357°N / 161.2399°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Dutton (102 km / 63 mi)
Nearby towns and cities:
98 km (61 mi) SE of King Cove (pop: 1,010) --> See nearby quakes!
111 km (69 mi) SSW of Sand Point (pop: 1,060) --> See nearby quakes!
126 km (79 mi) SE of Cold Bay (pop: 123) --> See nearby quakes!
147 km (92 mi) ESE of False Pass (pop: 40) --> See nearby quakes!
174 km (108 mi) S of Nelson Lagoon (pop: 52) --> See nearby quakes!
211 km (131 mi) SW of Perryville (pop: 113) --> See nearby quakes!
256 km (159 mi) SW of Chignik Lake (pop: 73) --> See nearby quakes!
296 km (184 mi) E of Akutan (pop: 1,040) --> See nearby quakes!
6249 km (3883 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6249 km (3883 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
76 km (47 mi) ESE of Cherni Island --> See nearby quakes!
115 km (72 mi) WSW of Chernabura Island --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.8 x 109 joules (783 kilowatt hours, equivalent to 0.674 tons of TNT) 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.
| Magnitude | Depth | Location | Source |
| M 3.1 | 10 km | 98 Km SE of King Cove, 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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Earlier earthquakes in the same area
Mag. 3.1 earthquake - Gulf of Alaska, 61 mi southeast of King Cove, Alaska, USA, on Friday, 11 September 2020 at 01:00 (GMT)
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