Mag. 3.3 earthquake - North Pacific Ocean, 85 mi southeast of Sand Point, Alaska, USA, on 20 Oct 6:53 am (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 21 hours earlier.
Quake Data | Interactive map | User Reports | Earlier quakes in same area | Quakes in the US | Alaska | Alaska | Washington DC
Minor magnitude 3.3 earthquake at 20 km depth
20 Oct 18:18 UTC: First to report: USGS after 25 minutes.
Local time at epicenter: 20 Oct 6:53 am (GMT -11)
Magnitude: 3.3
Depth: 20.3 km
Epicenter latitude / longitude: 54.2184°N / 159.6066°W
(North Pacific Ocean, Alaska, United States)Nearest volcano: Dana (189 km / 117 mi)
Nearby towns and cities:
137 km (85 mi) SSE of Sand Point (pop: 1,060) --> See nearby quakes!
191 km (118 mi) S of Perryville (pop: 113) --> See nearby quakes!
198 km (123 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
223 km (138 mi) SSE of Nelson Lagoon (pop: 52) --> See nearby quakes!
227 km (141 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
233 km (145 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
243 km (151 mi) SSW of Chignik (pop: 87) --> See nearby quakes!
255 km (159 mi) ESE of False Pass (pop: 40) --> See nearby quakes!
6159 km (3827 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6159 km (3827 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
63 km (39 mi) S of Chernabura Island --> See nearby quakes!
Weather at epicenter at time of quake:
Broken Clouds
7°C (45 F), humidity: 65%, wind: 4 m/s (8 kts) from NE
Primary data source: USGS (United States Geological Survey)
Broken Clouds
7°C (45 F), humidity: 65%, wind: 4 m/s (8 kts) from NEEstimated released energy: 5.6 x 109 joules (1.56 megawatt hours, equivalent to 1.34 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 3.3 | 20 km | 137 Km SSE of Sand Point, Alaska, USA | USGS |
| M 3.3 | 20 km | South Of Alaska, USA | EMSC |
User reports for this quake (1)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
