Mag. 4.4 earthquake - Gulf of Alaska, 14 mi northeast of Big Koniuji Island, Aleutians East County, Alaska, USA, on Friday, 24 July 2020 at 07:17 (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 2 days earlier.
Mag. 4.4 earthquake  - Gulf of Alaska, 14 mi northeast of Big Koniuji Island, Aleutians East County, Alaska, USA, on Friday, 24 July 2020 at 07:17 (GMT)

Light magnitude 4.4 earthquake at 33 km depth

24 Jul 07:28 UTC: First to report: USGS after 11 minutes.
Jul 24 07:58: Magnitude recalculated from 4.5 to 4.4.
Hypocenter depth recalculated from 40.4 to 32.8 km.
Date & time: 24 Jul 2020 07:17:31 UTC -
Magnitude: 4.4
Depth: 32.8 km
Epicenter latitude / longitude: 55.2173°N / 159.233°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Stepovak Bay 2 (90 km / 56 mi)
Nearby towns and cities:
77 km (48 mi) S of Perryville (pop: 113) --> See nearby quakes!
81 km (51 mi) E of Sand Point (pop: 1,060) --> See nearby quakes!
119 km (74 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
129 km (80 mi) SSW of Chignik Lagoon (pop: 78) --> See nearby quakes!
197 km (122 mi) E of King Cove (pop: 1,010) --> See nearby quakes!
438 km (272 mi) ENE of Akutan (pop: 1,040) --> See nearby quakes!
494 km (307 mi) ENE of Unalaska (pop: 4,490) --> See nearby quakes!
507 km (315 mi) WSW of Kodiak (pop: 6,250) --> See nearby quakes!
6099 km (3790 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6099 km (3790 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
22 km (14 mi) ENE of Big Koniuji Island --> See nearby quakes!
52 km (32 mi) NNE of Chernabura Island --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.5 x 1011 joules (69.8 megawatt hours, equivalent to 60 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 4.433 km77 km S of Perryville, Alaska (USA)USGS
M 4.539 kmAlaska Peninsula (USA)EMSC
M 4.931 kmAlaska Peninsula (USA)GFZ

User reports for this quake (2)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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129.4 km NNE of epicenter [Map] / Light shaking (MMI IV) : All household members felt the shaking/ rocking and even the dog reacted. Heard house shaking and saw some things moving with the shakes. Nothing really fell out was noticeably displaced. (reported through our app)
Perryville (77.7 km N of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
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Earlier earthquakes in the same area

Mag. 4.4 earthquake - Gulf of Alaska, 14 mi northeast of Big Koniuji Island, Aleutians East County, Alaska, USA, on Friday, 24 July 2020 at 07:17 (GMT)
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