Mag. 4.4 earthquake - North Pacific Ocean, 81 mi south of Sand Point, Alaska, USA, on Monday, 19 Oct 2020 9:06 pm (GMT -11) -
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 11 hours earlier.
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Light magnitude 4.4 earthquake at 23 km depth
20 Oct 19:40 UTC: First to report: USGS after 12 hours.
21 Oct 07:12: Magnitude recalculated from 3.8 to 4.4. Hypocenter depth recalculated from 32.5 to 23.1 km (from 20 to 14.4 mi). Epicenter location corrected by 4.2 km (2.6 mi) towards SSE.
21 Oct 07:12: Magnitude recalculated from 3.8 to 4.4. Hypocenter depth recalculated from 32.5 to 23.1 km (from 20 to 14.4 mi). Epicenter location corrected by 4.2 km (2.6 mi) towards SSE.
Local time at epicenter: Monday, 19 Oct 2020 9:06 pm (GMT -11)
Magnitude: 4.4
Depth: 23.1 km
Epicenter latitude / longitude: 54.236°N / 159.7795°W
(North Pacific Ocean, Alaska, United States)Nearest volcano: Dana (177 km / 110 mi)
Nearby towns and cities:
131 km (81 mi) SSE of Sand Point (pop: 1,060) --> See nearby quakes!
187 km (116 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
191 km (118 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
217 km (135 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
390 km (243 mi) E of Akutan (pop: 1,040) --> See nearby quakes!
443 km (275 mi) E of Unalaska (pop: 4,490) --> See nearby quakes!
594 km (369 mi) SW of Kodiak Station (pop: 1,300) --> See nearby quakes!
605 km (376 mi) SW of Kodiak (pop: 6,250) --> See nearby quakes!
6169 km (3833 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6169 km (3833 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
63 km (39 mi) SSW of Chernabura Island --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.5 x 1011 joules (69.8 megawatt hours, equivalent to 60 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 4.4 | 23 km | 130 Km SSE of Sand Point, Alaska, USA | USGS |
User reports for this quake
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Earlier earthquakes in the same area
Mag. 4.4 earthquake - North Pacific Ocean, 81 mi south of Sand Point, Alaska, USA, on Monday, 19 Oct 2020 9:06 pm (GMT -11)
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