Mag. 3.4 earthquake - Gulf of Alaska, 39 mi southeast of Sand Point, Alaska, USA, on Wednesday, 19 August 2020 at 17:44 (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 4 weeks earlier.
Quake Data | Interactive map | User Reports | Earlier quakes in same area | Quakes in the US | Alaska | Alaska | Washington DC
Minor magnitude 3.4 earthquake at 28 km depth
19 Aug 18:25 UTC: First to report: USGS after 41 minutes.
Aug 19 19:12: Magnitude recalculated from 3.2 to 3.4.
Hypocenter depth recalculated from 21.3 to 27.7 km.
Aug 19 19:12: Magnitude recalculated from 3.2 to 3.4.
Hypocenter depth recalculated from 21.3 to 27.7 km.
Magnitude: 3.4
Depth: 27.7 km
Epicenter latitude / longitude: 54.9279°N / 159.831°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Stepovak Bay 2 (110 km / 68 mi)
Nearby towns and cities:
62 km (39 mi) SE of Sand Point (pop: 1,060) --> See nearby quakes!
118 km (73 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
148 km (92 mi) SE of Nelson Lagoon (pop: 52) --> See nearby quakes!
159 km (99 mi) E of King Cove (pop: 1,010) --> See nearby quakes!
162 km (101 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
174 km (108 mi) SSW of Chignik Lagoon (pop: 78) --> See nearby quakes!
186 km (116 mi) E of Cold Bay (pop: 123) --> See nearby quakes!
236 km (147 mi) SSW of Port Heiden (pop: 98) --> See nearby quakes!
6145 km (3819 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6145 km (3819 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
24 km (15 mi) NW 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 | 28 km | 62 km SE of Sand Point, Alaska (USA) | USGS |
| M 3.4 | 28 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.
There are no user reports for this quake yet. If you felt it be the first to report it!
Earlier earthquakes in the same area
Mag. 3.4 earthquake - Gulf of Alaska, 39 mi southeast of Sand Point, Alaska, USA, on Wednesday, 19 August 2020 at 17:44 (GMT)
Click here to search our database for earlier earthquakes in the same area since 1900!
