Mag. 3.4 earthquake - 77 miles SE of Perryville, Alaska, on Saturday, 7 Nov 2020 7:18 am (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 3 weeks earlier.
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Minor magnitude 3.4 earthquake at 13 km depth
7 Nov 18:24 UTC: First to report: USGS after 2 hours and 6 minutes.
7 Nov 21:06: Magnitude recalculated from 3.9 to 3.4. Hypocenter depth recalculated from 17.6 to 13.0 km (from 10.9 to 8.1 mi). Epicenter location corrected by 14 km (8.7 mi) towards N.
7 Nov 21:06: Magnitude recalculated from 3.9 to 3.4. Hypocenter depth recalculated from 17.6 to 13.0 km (from 10.9 to 8.1 mi). Epicenter location corrected by 14 km (8.7 mi) towards N.
Local time at epicenter: Saturday, 7 Nov 2020 7:18 am (GMT -9)
Magnitude: 3.4
Depth: 13.0 km
Epicenter latitude / longitude: 54.9877°N / 158.0286°W

Nearest volcano: Veniaminof (167 km / 104 mi)
Nearby towns and cities:
125 km (77 mi) SE of Perryville (pop: 113) --> See nearby quakes!
147 km (91 mi) S of Chignik (pop: 87) --> See nearby quakes!
148 km (92 mi) SSE of Chignik Lake (pop: 73) --> See nearby quakes!
162 km (100 mi) ESE of Sand Point (pop: 1,060) --> See nearby quakes!
221 km (137 mi) S of Port Heiden (pop: 98) --> See nearby quakes!
230 km (143 mi) ESE of Nelson Lagoon (pop: 52) --> See nearby quakes!
274 km (170 mi) E of King Cove (pop: 1,010) --> See nearby quakes!
299 km (186 mi) E of Cold Bay (pop: 123) --> See nearby quakes!
6035 km (3750 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6035 km (3750 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
80 km (50 mi) E of Simeonof Island --> See nearby quakes!
100 km (62 mi) ENE of Chernabura Island --> See nearby quakes!
Weather at epicenter at time of quake:
Few Clouds
8.4°C (47 F), humidity: 82%, wind: 8 m/s (16 kts) from SW
Primary data source: USGS (United States Geological Survey)
Few Clouds

Estimated 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 | 13 km | 124 Km SE of Perryville, Alaska, USA | USGS |
M 3.4 | 13 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.
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There are no user reports for this quake yet. If you felt it Earlier earthquakes in the same area since 1900
Mag. 3.4 earthquake - 77 miles SE of Perryville, Alaska, on Saturday, 7 Nov 2020 7:18 am (GMT -9)- Date / time UTC| Mag |Depth|Age|Distance| Details
- 10 Nov 1938 20:18| 8.2 |35km / 22mi|82 years ago|23km / 14mi| Alaska Peninsula (USA)
- 22 Jul 2020 06:12| 7.8 |28km / 17mi|26 weeks ago|32km / 20mi| 105 Km SSE of Perryville, Alaska (USA)
- 19 Oct 2020 20:54| 7.6 |35km / 22mi|13 weeks ago|111km / 69mi| 97 Km SE of Sand Point, Alaska, USA
- 31 May 1917 08:47| 7.4 |35km / 22mi|104 years ago|90km / 56mi| South of Alaska (USA)
- 04 Sep 1989 13:14| 7.1 |11.4km / 7.1mi|31 years ago|98km / 61mi| South of Alaska (USA)
- 14 May 1948 22:31| 7.1 |25km / 16mi|73 years ago|207km / 129mi| Alaska Peninsula (USA)
- 30 May 1991 13:17| 7.0 |28km / 18mi|30 years ago|234km / 146mi| Alaska Peninsula (USA)
- 04 May 1923 16:26| 7.0 |25km / 16mi|98 years ago|120km / 75mi| South of Alaska (USA)
- 17 Nov 1938 03:54| 6.9 |35km / 22mi|82 years ago|45km / 28mi| Alaska Peninsula (USA)
- 13 Feb 1979 05:34| 6.7 |33km / 21mi|42 years ago|76km / 47mi| Alaska Peninsula (USA)
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