Mag. 3.7 earthquake - Gulf of Alaska, 43 mi east of Simeonof Island, Aleutians East County, Alaska, USA, on Wednesday, 22 July 2020 at 13:49 (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 8 hours earlier.
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Minor magnitude 3.7 earthquake at 26 km depth
22 Jul 14:07 UTC: First to report: USGS after 18 minutes.
Magnitude: 3.7
Depth: 25.6 km
Epicenter latitude / longitude: 54.7337°N / 158.2362°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Kupreanof (173 km / 107 mi)
Nearby towns and cities:
143 km (89 mi) SSE of Perryville (pop: 113) --> See nearby quakes!
159 km (99 mi) ESE of Sand Point (pop: 1,060) --> See nearby quakes!
172 km (107 mi) SSE of Chignik Lake (pop: 73) --> See nearby quakes!
176 km (109 mi) S of Chignik Lagoon (pop: 78) --> See nearby quakes!
247 km (154 mi) S of Port Heiden (pop: 98) --> See nearby quakes!
264 km (164 mi) E of King Cove (pop: 1,010) --> See nearby quakes!
485 km (301 mi) SW of Kodiak Station (pop: 1,300) --> See nearby quakes!
495 km (307 mi) SW of Kodiak (pop: 6,250) --> See nearby quakes!
6056 km (3763 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6056 km (3763 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
69 km (43 mi) ESE of Simeonof Island --> See nearby quakes!
85 km (53 mi) E 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 | 26 km | 143 km SSE of Perryville, Alaska (USA) | USGS |
| M 3.7 | 26 km | South Of Alaska (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, 43 mi east of Simeonof Island, Aleutians East County, Alaska, USA, on Wednesday, 22 July 2020 at 13:49 (GMT)
Click here to search our database for earlier earthquakes in the same area since 1900!
