Mag. 4.0 earthquake - 84 mi south of Sand Point, Alaska, on Monday, 9 November 2020 at 22:01 (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 3 weeks earlier.
Quake Data | Interactive map | User Reports | Earlier quakes in same area | Quakes in the US | Alaska | Alaska | Washington DC
Light magnitude 4.0 earthquake at 18 km depth
9 Nov 23:40 UTC: First to report: USGS after 1 hour and 39 minutes.
9 Nov 23:52: Magnitude recalculated from 3.5 to 4.0. Hypocenter depth recalculated from 19.7 to 17.6 km (from 12.2 to 10.9 mi). Epicenter location corrected by 4.9 km (3.1 mi) towards NW.
9 Nov 23:52: Magnitude recalculated from 3.5 to 4.0. Hypocenter depth recalculated from 19.7 to 17.6 km (from 12.2 to 10.9 mi). Epicenter location corrected by 4.9 km (3.1 mi) towards NW.
Magnitude: 4
Depth: 17.6 km
Epicenter latitude / longitude: 54.1574°N / 159.9417°W
(North Pacific Ocean, Alaska, United States)Nearest volcano: Dana (189 km / 117 mi)
Nearby towns and cities:
136 km (84 mi) SSE of Sand Point (pop: 1,060) --> See nearby quakes!
183 km (114 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
202 km (125 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
212 km (132 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
220 km (137 mi) SSE of Nelson Lagoon (pop: 52) --> See nearby quakes!
245 km (152 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
380 km (236 mi) E of Akutan (pop: 1,040) --> See nearby quakes!
432 km (268 mi) E of Unalaska (pop: 4,490) --> See nearby quakes!
6182 km (3841 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6182 km (3841 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
74 km (46 mi) SSW of Chernabura Island --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 6.3 x 1010 joules (17.5 megawatt hours, equivalent to 15.1 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 4.0 | 18 km | 136 Km SSE of Sand Point, Alaska, USA | USGS |
| M 4.0 | 18 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. 4.0 earthquake - 84 mi south of Sand Point, Alaska, on Monday, 9 November 2020 at 22:01 (GMT)
Click here to search our database for earlier earthquakes in the same area since 1900!
