Mag. 3.4 earthquake - North Pacific Ocean, 80 mi southeast of Sand Point, Alaska, USA, on 20 Oct 7:21 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 3.4 earthquake at 2 km depth
20 Oct 19:04 UTC: First to report: USGS after 42 minutes.
Local time at epicenter: 20 Oct 7:21 am (GMT -11)
Magnitude: 3.4
Depth: 1.5 km
Epicenter latitude / longitude: 54.2766°N / 159.6695°W
(North Pacific Ocean, Alaska, United States)Nearest volcano: Dana (181 km / 112 mi)
Nearby towns and cities:
129 km (80 mi) SSE of Sand Point (pop: 1,060) --> See nearby quakes!
185 km (115 mi) S of Perryville (pop: 113) --> See nearby quakes!
191 km (119 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
215 km (134 mi) SSE of Nelson Lagoon (pop: 52) --> See nearby quakes!
221 km (137 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
227 km (141 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
238 km (148 mi) SSW of Chignik (pop: 87) --> See nearby quakes!
250 km (155 mi) ESE of False Pass (pop: 40) --> See nearby quakes!
6161 km (3828 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6161 km (3828 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
57 km (36 mi) S of Chernabura Island --> See nearby quakes!
Weather at epicenter at time of quake:
Overcast Clouds
7°C (45 F), humidity: 63%, wind: 4 m/s (8 kts) from NE
Primary data source: USGS (United States Geological Survey)
Overcast Clouds
7°C (45 F), humidity: 63%, wind: 4 m/s (8 kts) from NEEstimated 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 | 1.5 km | 129 Km SSE of Sand Point, Alaska, USA | USGS |
| M 3.4 | 2 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 - North Pacific Ocean, 80 mi southeast of Sand Point, Alaska, USA, on 20 Oct 7:21 am (GMT -11)
Click here to search our database for earlier earthquakes in the same area since 1900!
