Mag. 3.9 earthquake - 48 mi southwest of Sand Point, Aleutians East County, Alaska, on Saturday, 8 August 2020 at 18:13 (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 3 weeks earlier.
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Minor magnitude 3.9 earthquake at 51 km depth
8 Aug 19:28 UTC: First to report: USGS after 1 hour and 15 minutes.
Magnitude: 3.9
Depth: 50.8 km
Epicenter latitude / longitude: 54.709°N / 161.008°W

Nearest volcano: Dutton (96 km / 60 mi)
Nearby towns and cities:
77 km (48 mi) SSW of Sand Point (pop: 1,060) --> See nearby quakes!
93 km (57 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
122 km (76 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
144 km (90 mi) S of Nelson Lagoon (pop: 52) --> See nearby quakes!
155 km (96 mi) E of False Pass (pop: 40) --> See nearby quakes!
178 km (111 mi) SW of Perryville (pop: 113) --> See nearby quakes!
315 km (196 mi) ENE of Akutan (pop: 1,040) --> See nearby quakes!
370 km (230 mi) ENE of Unalaska (pop: 4,490) --> See nearby quakes!
6225 km (3868 mi) NW of Washington DC (pop: 601,700) --> See nearby quakes!
6225 km (3868 mi) NW of Washington DC (pop: 601,700) --> See nearby quakes!
59 km (37 mi) SSE of Wosnesenski Island --> See nearby quakes!
94 km (58 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 | 51 km | Alaska Peninsula (USA) | EMSC |
M 3.9 | 51 km | 77 km SSW of Sand Point, Alaska (USA) | USGS |
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. 3.9 earthquake - 48 mi southwest of Sand Point, Aleutians East County, Alaska, on Saturday, 8 August 2020 at 18:13 (GMT)Click here to search our database for earlier earthquakes in the same area since 1900!