Mag. 3.7 earthquake - Gulf of Alaska, 19 mi south of Shumagin s Island, USA, on Monday, 27 July 2020 at 21:20 (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 37 km depth
27 Jul 21:56 UTC: First to report: USGS after 37 minutes.
Magnitude: 3.7
Depth: 37.2 km
Epicenter latitude / longitude: 54.9101°N / 160.284°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Dana (100 km / 62 mi)
Nearby towns and cities:
49 km (31 mi) SSE of Sand Point (pop: 1,060) --> See nearby quakes!
131 km (81 mi) E of King Cove (pop: 1,010) --> See nearby quakes!
133 km (82 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
135 km (84 mi) SSE of Nelson Lagoon (pop: 52) --> See nearby quakes!
158 km (98 mi) E of Cold Bay (pop: 123) --> See nearby quakes!
178 km (110 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
365 km (227 mi) ENE of Akutan (pop: 1,040) --> See nearby quakes!
421 km (261 mi) ENE of Unalaska (pop: 4,490) --> See nearby quakes!
6173 km (3836 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6173 km (3836 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
30 km (19 mi) S of Shumagin s Island --> See nearby quakes!
49 km (30 mi) WNW 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 | 37 km | 49 km SSE of Sand Point, Alaska (USA) | USGS |
| M 3.7 | 37 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, 19 mi south of Shumagin s Island, USA, on Monday, 27 July 2020 at 21:20 (GMT)
Click here to search our database for earlier earthquakes in the same area since 1900!
