Mag. 4.2 earthquake - Gulf of Alaska, 20 mi south of Shumagin s Island, Aleutians East County, Alaska, USA, on Wednesday, 29 July 2020 at 08:47 (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 days earlier.
Mag. 4.2 earthquake - Gulf of Alaska, 20 mi south of Shumagin s Island, Aleutians East County, Alaska, USA, on Wednesday, 29 July 2020 at 08:47 (GMT)

Light magnitude 4.2 earthquake at 33 km depth

29 Jul 09:04 UTC: First to report: USGS after 16 minutes.
Date & time: 29 Jul 2020 08:47:40 UTC -
Magnitude: 4.2
Depth: 33.1 km
Epicenter latitude / longitude: 54.8794°N / 160.2484°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Dana (105 km / 65 mi)
Nearby towns and cities:
53 km (33 mi) SSE of Sand Point (pop: 1,060) --> See nearby quakes!
134 km (83 mi) E of King Cove (pop: 1,010) --> See nearby quakes!
134 km (83 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
139 km (86 mi) SSE of Nelson Lagoon (pop: 52) --> See nearby quakes!
161 km (100 mi) E of Cold Bay (pop: 123) --> See nearby quakes!
179 km (111 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
366 km (228 mi) ENE of Akutan (pop: 1,040) --> See nearby quakes!
422 km (262 mi) ENE of Unalaska (pop: 4,490) --> See nearby quakes!
6172 km (3835 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6172 km (3835 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
33 km (20 mi) S of Shumagin s Island --> See nearby quakes!
46 km (28 mi) WNW of Chernabura Island --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 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 4.233 km53 km SSE of Sand Point, Alaska (USA)USGS
M 4.233 kmAlaska Peninsula (USA)EMSC

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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Earlier earthquakes in the same area since 1900

Mag. 4.2 earthquake - Gulf of Alaska, 20 mi south of Shumagin s Island, Aleutians East County, Alaska, USA, on Wednesday, 29 July 2020 at 08:47 (GMT)

Map of earlier quakes

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