Mag. 3.0 earthquake - Gulf of Alaska, 37 mi south of Sand Point, Alaska, USA, on Thursday, 13 August 2020 at 03:03 (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 3 weeks earlier.
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Minor magnitude 3.0 earthquake at 35 km depth
13 Aug 03:33 UTC: First to report: USGS after 31 minutes.
Aug 13 04:42: Magnitude recalculated from 2.9 to 3.0.
Hypocenter depth recalculated from 19.9 to 35.0 km.
Aug 13 04:42: Magnitude recalculated from 2.9 to 3.0.
Hypocenter depth recalculated from 19.9 to 35.0 km.
Magnitude: 3
Depth: 35.0 km
Epicenter latitude / longitude: 54.8148°N / 160.3085°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Dana (105 km / 65 mi)
Nearby towns and cities:
59 km (37 mi) SSE of Sand Point (pop: 1,060) --> See nearby quakes!
131 km (82 mi) E of King Cove (pop: 1,010) --> See nearby quakes!
142 km (88 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
144 km (89 mi) SSE of Nelson Lagoon (pop: 52) --> See nearby quakes!
159 km (99 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
187 km (116 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
199 km (124 mi) E of False Pass (pop: 40) --> See nearby quakes!
200 km (124 mi) SW of Chignik Lagoon (pop: 78) --> See nearby quakes!
6178 km (3839 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6178 km (3839 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
41 km (25 mi) S of Shumagin s Island --> See nearby quakes!
49 km (30 mi) W of Chernabura Island --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2 x 109 joules (554 kilowatt hours, equivalent to 0.477 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 3.0 | 35 km | 59 km SSE of Sand Point, Alaska (USA) | USGS |
| M 3.0 | 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. 3.0 earthquake - Gulf of Alaska, 37 mi south of Sand Point, Alaska, USA, on Thursday, 13 August 2020 at 03:03 (GMT)
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