Mag. 4.9 earthquake - 60 mi southwest of King Cove, Aleutians East County, Alaska, on Thursday, 20 August 2020 at 16:35 (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 4 weeks earlier.
Mag. 4.9 earthquake  - 60 mi southwest of King Cove, Aleutians East County, Alaska, on Thursday, 20 August 2020 at 16:35 (GMT)

Light magnitude 4.9 earthquake at 40 km depth

20 Aug 16:46 UTC: First to report: GFZ after 11 minutes.
Hypocenter depth recalculated from 10.0 to 40.0 km.
Date & time: 20 Aug 2020 16:35:09 UTC -
Magnitude: 4.9
Depth: 40.0 km
Epicenter latitude / longitude: 54.27°N / 162.92°W (Gulf of Alaska, United States)
Nearest volcano: Roundtop (71 km / 44 mi)
Nearby towns and cities:
72 km (45 mi) SSE of False Pass (pop: 40) --> See nearby quakes!
96 km (60 mi) SSW of King Cove (pop: 1,010) --> See nearby quakes!
103 km (64 mi) S of Cold Bay (pop: 123) --> See nearby quakes!
186 km (116 mi) E of Akutan (pop: 1,040) --> See nearby quakes!
195 km (121 mi) SW of Sand Point (pop: 1,060) --> See nearby quakes!
221 km (137 mi) SSW of Nelson Lagoon (pop: 52) --> See nearby quakes!
240 km (149 mi) ENE of Unalaska (pop: 4,490) --> See nearby quakes!
302 km (187 mi) SW of Perryville (pop: 113) --> See nearby quakes!
6357 km (3950 mi) NW of Washington DC (pop: 601,700) --> See nearby quakes!
6357 km (3950 mi) NW of Washington DC (pop: 601,700) --> See nearby quakes!
22 km (14 mi) SW of Sanak Island --> See nearby quakes!
172 km (107 mi) E of Rootok Island --> See nearby quakes!
Primary data source: GFZ (German Research Centre for Geosciences)
Estimated released energy: 1.4 x 1012 joules (392 megawatt hours, equivalent to 338 tons of TNT) 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 4.940 kmAlaska Peninsula (USA)GFZ
M 5.057 kmAlaska Peninsula (USA)EMSC
M 5.144 kmAlaska Peninsula (USA)GeoAu
M 5.045 km87 km SSE of False Pass, Alaska (USA)USGS

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
364.1 km NE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
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Earlier earthquakes in the same area

Mag. 4.9 earthquake - 60 mi southwest of King Cove, Aleutians East County, Alaska, on Thursday, 20 August 2020 at 16:35 (GMT)
Volcanoes & Earthquakes - new app for Android
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