Mag. 4.1 earthquake - Gulf of Alaska, 102 mi east of Sand Point, Alaska, USA, on Monday, 10 August 2020 at 12:54 (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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Light magnitude 4.1 earthquake at 37 km depth
10 Aug 13:12 UTC: First to report: USGS after 17 minutes.
Hypocenter depth recalculated from 29.0 to 36.9 km.
Hypocenter depth recalculated from 29.0 to 36.9 km.
Magnitude: 4.1
Depth: 36.9 km
Epicenter latitude / longitude: 55.0756°N / 157.9601°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Veniaminof (148 km / 92 mi)
Nearby towns and cities:
119 km (74 mi) SE of Perryville (pop: 113) --> See nearby quakes!
138 km (86 mi) SSE of Chignik (pop: 87) --> See nearby quakes!
141 km (87 mi) SSE of Chignik Lake (pop: 73) --> See nearby quakes!
164 km (102 mi) E of Sand Point (pop: 1,060) --> See nearby quakes!
212 km (132 mi) SSE of Port Heiden (pop: 98) --> See nearby quakes!
229 km (142 mi) ESE of Nelson Lagoon (pop: 52) --> See nearby quakes!
278 km (172 mi) E of King Cove (pop: 1,010) --> See nearby quakes!
456 km (283 mi) SW of Kodiak (pop: 6,250) --> See nearby quakes!
6027 km (3745 mi) NW of Washington (District of Columbia) (pop: 601,700) --> See nearby quakes!
6027 km (3745 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
86 km (53 mi) ENE of Simeonof Island --> See nearby quakes!
107 km (66 mi) ENE of Chernabura Island --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 8.9 x 1010 joules (24.8 megawatt hours, equivalent to 21.3 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 4.1 | 37 km | 119 km SE of Perryville, Alaska (USA) | USGS |
| M 4.8 | 40 km | Alaska Peninsula (USA) | EMSC |
| M 4.8 | 26 km | Alaska Peninsula (USA) | GFZ |
User reports for this quake
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Earlier earthquakes in the same area
Mag. 4.1 earthquake - Gulf of Alaska, 102 mi east of Sand Point, Alaska, USA, on Monday, 10 August 2020 at 12:54 (GMT)
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