Mag. 3.9 earthquake - Gulf of Alaska, 60 mi south of Sand Point, Alaska, USA, on Friday, 7 August 2020 at 11:33 (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 2 weeks earlier.
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Minor magnitude 3.9 earthquake at 35 km depth
7 Aug 14:26 UTC: First to report: USGS after 2 hours and 53 minutes.
Magnitude: 3.9
Depth: 35.0 km
Epicenter latitude / longitude: 54.5269°N / 161.0247°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Dutton (107 km / 66 mi)
Nearby towns and cities:
96 km (60 mi) SSW of Sand Point (pop: 1,060) --> See nearby quakes!
102 km (63 mi) SE of King Cove (pop: 1,010) --> See nearby quakes!
131 km (81 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
158 km (98 mi) ESE of False Pass (pop: 40) --> See nearby quakes!
164 km (102 mi) S of Nelson Lagoon (pop: 52) --> See nearby quakes!
195 km (121 mi) SW of Perryville (pop: 113) --> See nearby quakes!
311 km (193 mi) E of Akutan (pop: 1,040) --> See nearby quakes!
366 km (227 mi) ENE of Unalaska (pop: 4,490) --> See nearby quakes!
6233 km (3873 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6233 km (3873 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
78 km (48 mi) SSE of Wosnesenski Island --> See nearby quakes!
99 km (62 mi) WSW 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 | 35 km | 96 km SSW of Sand Point, Alaska (USA) | USGS |
| M 3.9 | 35 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, 60 mi south of Sand Point, Alaska, USA, on Friday, 7 August 2020 at 11:33 (GMT)
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