Mag. 3.3 earthquake - Gulf of Alaska, 117 mi south of Saint Paul, Alaska, USA, on Friday, 28 August 2020 at 15:44 (GMT) -

Mag. 3.3 earthquake - Gulf of Alaska, 117 mi south of Saint Paul, Alaska, USA, on Friday, 28 August 2020 at 15:44 (GMT)

Minor magnitude 3.3 earthquake at 21 km depth

28 Aug 15:56 UTC: First to report: USGS after 12 minutes.
Aug 28 17:48: Magnitude recalculated from 3.5 to 3.3.
Hypocenter depth recalculated from 22.2 to 21.2 km.
Date & time: 28 Aug 2020 15:44:03 UTC -
Magnitude: 3.3
Depth: 21.2 km
Epicenter latitude / longitude: 56.1459°N / 153.1089°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Unnamed 57.87°N/155.42°W (234 km / 145 mi)
Nearby towns and cities:
110 km (68 mi) SE of Akhiok (pop: 72) --> See nearby quakes!
118 km (73 mi) S of Old Harbor (pop: 221) --> See nearby quakes!
164 km (102 mi) SSE of Larsen Bay (pop: 88) --> See nearby quakes!
170 km (106 mi) SSW of Chiniak (pop: 47) --> See nearby quakes!
173 km (107 mi) S of Womens Bay (pop: 719) --> See nearby quakes!
178 km (111 mi) SSE of Karluk (pop: 37) --> See nearby quakes!
188 km (117 mi) SSW of Kodiak (pop: 6,250) --> See nearby quakes!
192 km (119 mi) S of Port Lions (pop: 197) --> See nearby quakes!
5701 km (3543 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
5701 km (3543 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
79 km (49 mi) SE of Sitkinak Island --> See nearby quakes!
102 km (63 mi) ESE of Tugidak Island --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 5.6 x 109 joules (1.56 megawatt hours, equivalent to 1.34 tons of TNT) More info
Show interactive Map
[smaller] [bigger]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.
MagnitudeDepthLocationSource
M 3.321 km110 km SE of Akhiok, Alaska (USA)USGS
M 3.522 kmKodiak Island Region, Alaska (USA)EMSC

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
visalia ca. / Very weak shaking (MMI II) / very short
Volcanoes & Earthquakes - new app for Android
to top

Earlier earthquakes in the same area

Mag. 3.3 earthquake - Gulf of Alaska, 117 mi south of Saint Paul, Alaska, USA, on Friday, 28 August 2020 at 15:44 (GMT)
Volcanoes & Earthquakes - new app for Android
Why is there advertising on this site?

Support us - Help us upgrade our server!

We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
Our server is reaching its limits and we need financing to increase capacity in order to deal with huge activity peaks when quakes occur. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every penny counts and every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features and in upgrading our software, please make a donation (PayPal or Online cc payment).

Planned features:
  • Weather reports
  • Tsunami alerts
  • Design upgrades
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Earthquake archive from 1900 onwards
  • Additional seismic data sources
  • Improved content in English
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you! With best regards from the VolcanoDiscovery team.
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.