Mag. 3.9 earthquake - Gulf of Alaska, 42 mi south of Sand Point, Aleutians East County, Alaska, USA, on Wednesday, 22 July 2020 at 23:09 (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 17 hours earlier.
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Minor magnitude 3.9 earthquake at 44 km depth
22 Jul 23:34 UTC: First to report: USGS after 25 minutes.
Magnitude: 3.9
Depth: 43.9 km
Epicenter latitude / longitude: 54.7294°N / 160.4788°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Dana (112 km / 70 mi)
Nearby towns and cities:
68 km (42 mi) S of Sand Point (pop: 1,060) --> See nearby quakes!
123 km (77 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
149 km (92 mi) SSE of Nelson Lagoon (pop: 52) --> See nearby quakes!
152 km (94 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
156 km (97 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
201 km (125 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
349 km (217 mi) ENE of Akutan (pop: 1,040) --> See nearby quakes!
404 km (251 mi) ENE of Unalaska (pop: 4,490) --> See nearby quakes!
6192 km (3848 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6192 km (3848 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
53 km (33 mi) SSW of Shumagin s Island --> See nearby quakes!
60 km (37 mi) W 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
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 3.9 | 44 km | 67 km S of Sand Point, Alaska (USA) | USGS |
| M 3.9 | 44 km | Alaska Peninsula (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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Earlier earthquakes in the same area
Mag. 3.9 earthquake - Gulf of Alaska, 42 mi south of Sand Point, Aleutians East County, Alaska, USA, on Wednesday, 22 July 2020 at 23:09 (GMT)
Click here to search our database for earlier earthquakes in the same area since 1900!
