Mag. 3.4 earthquake - Gulf of Alaska, 78 mi southeast of Sand Point, Alaska, USA, on Tuesday, 20 October 2020 at 20:16 (GMT) -
This quake was likely an aftershock of the 7.6 quake Gulf of Alaska, 60 mi southeast of Sand Point, Aleutians East County, Alaska, USA, 19 Oct 2020 11:54 am (GMT -9), which had occurred 23 hours earlier.
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Minor magnitude 3.4 earthquake at 25 km depth
20 Oct 22:26 UTC: First to report: USGS after 2 hours and 10 minutes.
Magnitude: 3.4
Depth: 24.5 km
Epicenter latitude / longitude: 54.3467°N / 159.5468°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Stepovak Bay 2 (177 km / 110 mi)
Nearby towns and cities:
126 km (78 mi) SSE of Sand Point (pop: 1,060) --> See nearby quakes!
176 km (109 mi) S of Perryville (pop: 113) --> See nearby quakes!
195 km (121 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
212 km (132 mi) SSE of Nelson Lagoon (pop: 52) --> See nearby quakes!
218 km (135 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
224 km (139 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
228 km (142 mi) SSW of Chignik (pop: 87) --> See nearby quakes!
255 km (159 mi) E of False Pass (pop: 40) --> See nearby quakes!
6150 km (3822 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6150 km (3822 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
49 km (30 mi) S of Chernabura Island --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 7.9 x 109 joules (2.21 megawatt hours, equivalent to 1.9 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 3.4 | 25 km | 126 Km SSE of Sand Point, Alaska, USA | USGS |
| M 3.4 | 24 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. 3.4 earthquake - Gulf of Alaska, 78 mi southeast of Sand Point, Alaska, USA, on Tuesday, 20 October 2020 at 20:16 (GMT)
Click here to search our database for earlier earthquakes in the same area since 1900!
