Moderate mag. 4.7 earthquake - Gulf of Alaska, 34 mi south of Sand Point, Aleutians East County, Alaska, USA, on Thursday, 23 July 2020 at 19:56 (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 1 jour 14 heures earlier.
Moderate mag. 4.7 earthquake - Gulf of Alaska, 34 mi south of Sand Point, Aleutians East County, Alaska, USA, on Thursday, 23 July 2020 at 19:56 (GMT)

Séisme modéré magnitude 4.7 at 40 km depth

23 Jul 21:22 UTC: Premier à signaler: USGS après 1 heure et 25 minutes.
Jul 24 17:14: Magnitude recalculée de 4.6 à 4.8.
Profondeur recalculée de 13.2 à 43.0 km.
Jul 30 14:14: Magnitude recalculée de 4.8 à 4.7.
Profondeur recalculée de 43.0 à 40.0 km.
Date & time: 23 Jul 2020 19:56:50 UTC -
Magnitude: 4.7
Profondeur: 40.0 km
Epicenter latitude / longitude: 54.8493°N / 160.6606°W (Gulf of Alaska, Alaska, États-Unis)
Volcan le plus près: Dana (90 km / 56 mi)
Nearby towns and cities:
55 km S de Sand Point (pop: 1,060) --> Voir les séismes à proximité!
108 km E de King Cove (pop: 1,010) --> Voir les séismes à proximité!
133 km SSE de Nelson Lagoon (pop: 52) --> Voir les séismes à proximité!
137 km ESE de Cold Bay (pop: 123) --> Voir les séismes à proximité!
152 km SO de Perryville (pop: 113) --> Voir les séismes à proximité!
176 km E de False Pass (pop: 40) --> Voir les séismes à proximité!
197 km SO de Chignik Lake (pop: 73) --> Voir les séismes à proximité!
210 km SO de Chignik Lagoon (pop: 78) --> Voir les séismes à proximité!
340 km ENE de Akutan (pop: 1,040) --> Voir les séismes à proximité!
396 km ENE de Unalaska (pop: 4,490) --> Voir les séismes à proximité!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 7.1 x 1011 joules (197 megawatt hours, equivalent to 169 tons of TNT) More info
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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.
MagnitudeProfondeurLocationSource
M 5.045 kmAlaska Peninsula (USA)GeoAu
M 5.137 kmAlaska Peninsula (USA)GFZ
M 5.140 kmAlaska Peninsula (USA)EMSC
M 4.740 km55 km S of Sand Point, Alaska (USA)USGS

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!
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