Mag. 4.1 earthquake - Gulf of Alaska, 51 mi southeast of Sand Point, Alaska, USA, on 19 Oct 6:57 pm (GMT -8) -
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 6 hours earlier.
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Light magnitude 4.1 earthquake at 15 km depth
20 Oct 03:16 UTC: First to report: USGS after 18 minutes.
Local time at epicenter: 19 Oct 6:57 pm (GMT -8)
Magnitude: 4.1
Depth: 15.2 km
Epicenter latitude / longitude: 54.6887°N / 159.8929°W

Nearest volcano: Dana (135 km / 84 mi)
Nearby towns and cities:
82 km (51 mi) SSE of Sand Point (pop: 1,060) --> See nearby quakes!
144 km (89 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
161 km (100 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
168 km (104 mi) SSE of Nelson Lagoon (pop: 52) --> See nearby quakes!
189 km (117 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
386 km (240 mi) ENE of Akutan (pop: 1,040) --> See nearby quakes!
440 km (274 mi) ENE of Unalaska (pop: 4,490) --> See nearby quakes!
577 km (358 mi) SW of Kodiak (pop: 6,250) --> See nearby quakes!
6158 km (3827 mi) NW of Washington (District of Columbia) (pop: 601,700) --> See nearby quakes!
6158 km (3827 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
24 km (15 mi) WSW of Chernabura Island --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky
8.4°C (47 F), humidity: 68%, wind: 7 m/s (13 kts) from NW
Primary data source: USGS (United States Geological Survey)
Clear Sky

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 | 15 km | 81 Km SSE of Sand Point, Alaska, USA | USGS |
M 4.1 | 15 km | South Of Alaska, USA | EMSC |
User reports for this quake
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Mag. 4.1 earthquake - Gulf of Alaska, 51 mi southeast of Sand Point, Alaska, USA, on 19 Oct 6:57 pm (GMT -8)Click here to search our database for earlier earthquakes in the same area since 1900!