Mag. 3.7 earthquake - Gulf of Alaska, 23 mi south of Shumagin s Island, Aleutians East County, Alaska, USA, on Tuesday, 28 July 2020 at 17:03 (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 days earlier.
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Minor magnitude 3.7 earthquake at 50 km depth
28 Jul 18:44 UTC: First to report: USGS after 1 hour and 40 minutes.
Magnitude: 3.7
Depth: 50.0 km
Epicenter latitude / longitude: 54.8348°N / 160.1996°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Dana (110 km / 68 mi)
Nearby towns and cities:
59 km (37 mi) SSE of Sand Point (pop: 1,060) --> See nearby quakes!
137 km (85 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
138 km (86 mi) E of King Cove (pop: 1,010) --> See nearby quakes!
144 km (90 mi) SSE of Nelson Lagoon (pop: 52) --> See nearby quakes!
165 km (103 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
182 km (113 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
195 km (121 mi) SSW of Chignik Lagoon (pop: 78) --> See nearby quakes!
369 km (229 mi) ENE of Akutan (pop: 1,040) --> See nearby quakes!
6171 km (3835 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6171 km (3835 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
38 km (23 mi) S of Shumagin s Island --> See nearby quakes!
42 km (26 mi) W of Chernabura Island --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.2 x 1010 joules (6.22 megawatt hours, equivalent to 5.35 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 3.7 | 50 km | 59 km SSE of Sand Point, Alaska (USA) | USGS |
| M 3.7 | 50 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. 3.7 earthquake - Gulf of Alaska, 23 mi south of Shumagin s Island, Aleutians East County, Alaska, USA, on Tuesday, 28 July 2020 at 17:03 (GMT)
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