Mag. 4.4 earthquake - Gulf of Alaska, 36 mi east of Simeonof Island, Aleutians East County, Alaska, USA, on Wednesday, 22 July 2020 at 12:33 (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 6 hours earlier.
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Light magnitude 4.4 earthquake at 22 km depth
22 Jul 12:54 UTC: First to report: USGS after 20 minutes.
Magnitude: 4.4
Depth: 22.4 km
Epicenter latitude / longitude: 54.8506°N / 158.3679°W

Nearest volcano: Kupreanof (157 km / 98 mi)
Nearby towns and cities:
128 km (79 mi) SSE of Perryville (pop: 113) --> See nearby quakes!
146 km (91 mi) ESE of Sand Point (pop: 1,060) --> See nearby quakes!
158 km (98 mi) S of Chignik Lake (pop: 73) --> See nearby quakes!
162 km (101 mi) S of Chignik Lagoon (pop: 78) --> See nearby quakes!
253 km (157 mi) E of King Cove (pop: 1,010) --> See nearby quakes!
481 km (299 mi) SW of Kodiak Station (pop: 1,300) --> See nearby quakes!
485 km (301 mi) ENE of Akutan (pop: 1,040) --> See nearby quakes!
492 km (306 mi) SW of Kodiak (pop: 6,250) --> See nearby quakes!
6060 km (3766 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6060 km (3766 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
58 km (36 mi) E of Simeonof Island --> See nearby quakes!
76 km (47 mi) E 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
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 4.4 | 22 km | 127 km SSE of Perryville, Alaska (USA) | USGS |
M 4.4 | 20 km | South Of Alaska (USA) | EMSC |
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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Mag. 4.4 earthquake - Gulf of Alaska, 36 mi east of Simeonof Island, Aleutians East County, Alaska, USA, on Wednesday, 22 July 2020 at 12:33 (GMT)Click here to search our database for earlier earthquakes in the same area since 1900!