Moderate mag. 5.2 earthquake - Gulf of Alaska, 31 mi south of Wosnesenski Island, Aleutians East County, Alaska, USA, on Tuesday, 4 August 2020 at 12:47 (GMT) -
This quake was likely an aftershock of the 7.8 quake Gulf of Alaska, 31 mi east of Simeonof Island, Aleutians East County, Alaska, USA, 22 July 2020 06:12 GMT, which had occurred 13 jours earlier.
Quake Data | Interactive map | User Reports | Earlier quakes in same area | Quakes in the US| Alaska | Alaska

Séisme modéré magnitude 5.2 at 44 km depth
4 Aug 13:08 UTC: Premier à signaler: USGS après 21 minutes.
Profondeur recalculée de 44.4 à 43.9 km.
Profondeur recalculée de 44.4 à 43.9 km.
Date & time: 4 Aug 2020 12:47:19 UTC -
Magnitude: 5.2
Profondeur: 43.9 km
Epicenter latitude / longitude: 54.7625°N / 161.1936°W

Volcan le plus près: Pavlof (58 km / 36 mi)
Nearby towns and cities:
78 km SO de Sand Point (pop: 1,060) --> Voir les séismes à proximité!
79 km ESE de King Cove (pop: 1,010) --> Voir les séismes à proximité!
108 km ESE de Cold Bay (pop: 123) --> Voir les séismes à proximité!
138 km S de Nelson Lagoon (pop: 52) --> Voir les séismes à proximité!
143 km E de False Pass (pop: 40) --> Voir les séismes à proximité!
182 km SO de Perryville (pop: 113) --> Voir les séismes à proximité!
226 km SO de Chignik Lake (pop: 73) --> Voir les séismes à proximité!
240 km SO de Chignik Lagoon (pop: 78) --> Voir les séismes à proximité!
304 km ENE de Akutan (pop: 1,040) --> Voir les séismes à proximité!
360 km ENE de Unalaska (pop: 4,490) --> Voir les séismes à proximité!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 4 x 1012 joules (1.11 gigawatt hours, equivalent to 951 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 | Profondeur | Location | Source |
M 5.1 | 38 km | Alaska Peninsula (USA) | GFZ |
M 5.2 | 44 km | Alaska Peninsula (USA) | EMSC |
M 5.2 | 44 km | 77 km SW of Sand Point, Alaska (USA) | USGS |
M 5.2 | 43 km | Alaska Peninsula (USA) | GeoAu |
M 5.0 | 219 km | Alaska Peninsula (USA) | BMKG |
User reports for this quake (2)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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King Cove, Alaska (77.1 km WNW of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
HAMILTON, Ontario, Canada / Very weak shaking (MMI II) : I was sleeping and my bed was shaking
Earlier earthquakes in the same area since 1900
- Date / time UTC| Mag |Profondeur|Age|Distance| Details
- 01 Apr 1946 12:29| 8.6 |15km / 9.3mi|il y a 75 ans|177km / 110mi| North Pacific Ocean, 154 mi E of Unalaska, Aleutians West (CA) County, Alaska, USA
- 10 Nov 1938 20:18| 8.2 |35km / 22mi|il y a 82 ans|198km / 123mi| Gulf of Alaska, 47 mi NE of Simeonof Island, Aleutians East County, Alaska, USA
- 22 Jul 2020 06:12| 7.8 |28km / 17mi|il y a 32 semaines|173km / 108mi| Gulf of Alaska, 31 mi E of Simeonof Island, Aleutians East County, Alaska, USA
- 31 May 1917 08:47| 7.4 |35km / 22mi|il y a 104 ans|114km / 71mi| Gulf of Alaska, 5.3 mi SW of Little Koniuji Island, Aleutians East County, Alaska, USA
- 14 May 1948 22:31| 7.1 |25km / 16mi|il y a 73 ans|17km / 11mi| Gulf of Alaska, 55 mi SE of King Cove, Aleutians East County, Alaska, USA
- 30 May 1991 13:17| 7.0 |28km / 18mi|il y a 30 ans|34km / 21mi| Gulf of Alaska, 31 mi E of Cherni Island, Aleutians East County, Alaska, USA
- 13 May 1993 11:59| 6.9 |32km / 20mi|il y a 28 ans|66km / 41mi| Gulf of Alaska, 11 mi S of Sand Point, Aleutians East County, Alaska, USA
- 10 Dec 1905 12:36| 6.9 |unknown|il y a 115 ans|103km / 64mi| North Pacific Ocean, 57 mi SE of Sanak Island, Aleutians East County, Alaska, USA
- 12 Feb 1940 09:17| 6.8 |unknown|il y a 81 ans|33km / 20mi| Gulf of Alaska, 14 mi S of Wosnesenski Island, Aleutians East County, Alaska, USA
- 09 Oct 1985 09:33| 6.6 |30km / 19mi|il y a 35 ans|101km / 63mi| Gulf of Alaska, 2.8 mi SW of Chernabura Island, Aleutians East County, Alaska, USA
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