Mag. 3.9 earthquake - 84 miles SE of Perryville, Alaska, on Monday, 2 Nov 2020 11:07 pm (GMT -9) -
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 2 weeks earlier.
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Minor magnitude 3.9 earthquake at 17 km depth
3 Nov 12:52 UTC: First to report: USGS after 5 hours.
3 Nov 20:06: Magnitude recalculated from 4.2 to 3.9. Hypocenter depth recalculated from 30.5 to 16.9 km (from 19 to 10.5 mi). Epicenter location corrected by 21 km (13 mi) towards NNE.
3 Nov 20:06: Magnitude recalculated from 4.2 to 3.9. Hypocenter depth recalculated from 30.5 to 16.9 km (from 19 to 10.5 mi). Epicenter location corrected by 21 km (13 mi) towards NNE.
Local time at epicenter: Monday, 2 Nov 2020 11:07 pm (GMT -9)
Magnitude: 3.9
Depth: 16.9 km
Epicenter latitude / longitude: 54.9537°N / 157.815°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Veniaminof (178 km / 111 mi)
Nearby towns and cities:
136 km (84 mi) SE of Perryville (pop: 113) --> See nearby quakes!
157 km (97 mi) SSE of Chignik Lake (pop: 73) --> See nearby quakes!
157 km (98 mi) SSE of Chignik Lagoon (pop: 78) --> See nearby quakes!
176 km (109 mi) ESE of Sand Point (pop: 1,060) --> See nearby quakes!
227 km (141 mi) SSE of Port Heiden (pop: 98) --> See nearby quakes!
243 km (151 mi) ESE of Nelson Lagoon (pop: 52) --> See nearby quakes!
287 km (179 mi) E of King Cove (pop: 1,010) --> See nearby quakes!
459 km (285 mi) SW of Kodiak (pop: 6,250) --> See nearby quakes!
6023 km (3742 mi) NW of Washington (District of Columbia) (pop: 601,700) --> See nearby quakes!
6023 km (3742 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
93 km (58 mi) E of Simeonof Island --> See nearby quakes!
113 km (70 mi) E of Chernabura Island --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky
8.3°C (47 F), humidity: 83%, wind: 8 m/s (16 kts) from WSW
Primary data source: USGS (United States Geological Survey)
Clear Sky
8.3°C (47 F), humidity: 83%, wind: 8 m/s (16 kts) from WSWEstimated released energy: 4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 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 3.9 | 17 km | 135 Km SE of Perryville, Alaska, USA | USGS |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Earlier earthquakes in the same area
Mag. 3.9 earthquake - 84 miles SE of Perryville, Alaska, on Monday, 2 Nov 2020 11:07 pm (GMT -9)
Click here to search our database for earlier earthquakes in the same area since 1900!
