Moderate mag. 5.0 earthquake - Gulf of Alaska, 15 mi southwest of Shumagin s Island, Aleutians East County, Alaska, USA, on Tuesday, 28 July 2020 at 12:42 (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 6 jours earlier.
Quake Data | Interactive map | User Reports | Earlier quakes in same area | Quakes in the US| Alaska

Séisme modéré magnitude 5.0 at 41 km depth
28 Jul 12:58 UTC: Premier à signaler: USGS après 15 minutes.
Date & time: 28 Jul 2020 12:42:52 UTC -
Magnitude: 5
Profondeur: 40.5 km
Epicenter latitude / longitude: 54.9841°N / 160.3834°W

Volcan le plus près: Dana (90 km / 56 mi)
Nearby towns and cities:
40 km S de Sand Point (pop: 1,060) --> Voir les séismes à proximité!
124 km E de King Cove (pop: 1,010) --> Voir les séismes à proximité!
124 km SSE de Nelson Lagoon (pop: 52) --> Voir les séismes à proximité!
129 km SO de Perryville (pop: 113) --> Voir les séismes à proximité!
150 km E de Cold Bay (pop: 123) --> Voir les séismes à proximité!
174 km SO de Chignik Lake (pop: 73) --> Voir les séismes à proximité!
188 km SO de Chignik Lagoon (pop: 78) --> Voir les séismes à proximité!
244 km SSO de Port Heiden (pop: 98) --> Voir les séismes à proximité!
360 km ENE de Akutan (pop: 1,040) --> Voir les séismes à proximité!
417 km ENE de Unalaska (pop: 4,490) --> Voir les séismes à proximité!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2 x 1012 joules (554 megawatt hours, equivalent to 477 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 5.0 | 34 km | Alaska Peninsula (USA) | GFZ |
M 5.0 | 41 km | Alaska Peninsula (USA) | EMSC |
M 5.1 | 10 km | Alaska Peninsula (USA) | GeoAu |
M 5.0 | 41 km | 39 km S of Sand Point, Alaska (USA) | USGS |
User reports for this quake (2)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
193.9 km NE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
129.1 km NE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
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|230km / 143mi| 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|142km / 88mi| 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|119km / 74mi| 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|61km / 38mi| Gulf of Alaska, 5.3 mi SW of Little Koniuji Island, Aleutians East County, Alaska, USA
- 04 Sep 1989 13:14| 7.1 |11.4km / 7.1mi|il y a 32 ans|233km / 145mi| Gulf of Alaska, USA
- 14 May 1948 22:31| 7.1 |25km / 16mi|il y a 73 ans|66km / 41mi| 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|91km / 57mi| Gulf of Alaska, 31 mi E of Cherni Island, Aleutians East County, Alaska, USA
- 04 May 1923 16:26| 7.0 |25km / 16mi|il y a 98 ans|243km / 151mi| Gulf of Alaska, 11 mi S of South Island, Kodiak Island County, Alaska, USA
- 13 May 1993 11:59| 6.9 |32km / 20mi|il y a 28 ans|22km / 14mi| 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|148km / 92mi| North Pacific Ocean, 57 mi SE of Sanak Island, Aleutians East County, Alaska, USA
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