Mag. 3.9 earthquake - Gulf of Alaska, 31 mi northeast of Simeonof Island, Aleutians East County, Alaska, USA, on Wednesday, 22 July 2020 at 19:37 (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 13 hours earlier.
Mag. 3.9 earthquake  - Gulf of Alaska, 31 mi northeast of Simeonof Island, Aleutians East County, Alaska, USA, on Wednesday, 22 July 2020 at 19:37 (GMT)

Minor magnitude 3.9 earthquake at 10 km depth

23 Jul 13:58 UTC: First to report: USGS after 18 hours.
Date & time: 22 Jul 2020 19:37:18 UTC -
Magnitude: 3.9
Depth: 10.0 km
Epicenter latitude / longitude: 55.0988°N / 158.5709°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Kupreanof (127 km / 79 mi)
Nearby towns and cities:
97 km (60 mi) SSE of Perryville (pop: 113) --> See nearby quakes!
125 km (78 mi) E of Sand Point (pop: 1,060) --> See nearby quakes!
129 km (80 mi) S of Chignik Lake (pop: 73) --> See nearby quakes!
133 km (83 mi) S of Chignik (pop: 87) --> See nearby quakes!
194 km (120 mi) ESE of Nelson Lagoon (pop: 52) --> See nearby quakes!
205 km (128 mi) S of Port Heiden (pop: 98) --> See nearby quakes!
239 km (148 mi) E of King Cove (pop: 1,010) --> See nearby quakes!
483 km (300 mi) SW of Kodiak (pop: 6,250) --> See nearby quakes!
6063 km (3768 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6063 km (3768 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
50 km (31 mi) ENE of Simeonof Island --> See nearby quakes!
72 km (45 mi) ENE of Chernabura Island --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 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 3.910 km97 km SSE of Perryville, Alaska (USA)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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Earlier earthquakes in the same area

Mag. 3.9 earthquake - Gulf of Alaska, 31 mi northeast of Simeonof Island, Aleutians East County, Alaska, USA, on Wednesday, 22 July 2020 at 19:37 (GMT)
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