Mag. 4.7 earthquake - Gulf of Alaska, 60 mi west of Akhiok, Alaska, USA, on 19 Oct 8:07 pm (GMT -8) -

Mag. 4.7 earthquake  - Gulf of Alaska, 60 mi west of Akhiok, Alaska, USA, on 19 Oct 8:07 pm (GMT -8)

Light magnitude 4.7 earthquake at 0 km depth

20 Oct 04:12 UTC: First to report: USGS after 5 minutes.
20 Oct 04:17: Magnitude recalculated from 3.7 to 4.7. Hypocenter depth recalculated from 15.3 to 0.1 km (from 9.5 to 0.1 mi). Epicenter location corrected by 389 km (242 mi) towards NE.
Date & time: 20 Oct 2020 04:07:34 UTC -
Local time at epicenter: 19 Oct 8:07 pm (GMT -8)
Magnitude: 4.7
Depth: 0.1 km
Epicenter latitude / longitude: 56.9487°N / 155.7547°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Dana (195 km / 121 mi)
Nearby towns and cities:
96 km (60 mi) W of Akhiok (pop: 72) --> See nearby quakes!
222 km (138 mi) WSW of Kodiak (pop: 6,250) --> See nearby quakes!
344 km (214 mi) NE of Sand Point (pop: 1,060) --> See nearby quakes!
387 km (241 mi) SW of Homer (pop: 5,520) --> See nearby quakes!
389 km (242 mi) SW of Anchor Point (pop: 1,930) --> See nearby quakes!
405 km (251 mi) SW of Fritz Creek (pop: 1,930) --> See nearby quakes!
464 km (288 mi) SW of Kalifornsky (pop: 7,850) --> See nearby quakes!
492 km (306 mi) SW of Sterling (pop: 5,620) --> See nearby quakes!
5835 km (3626 mi) NW of Washington (District of Columbia) (pop: 601,700) --> See nearby quakes!
5835 km (3626 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
146 km (91 mi) WSW of Kodiak Island (pop: 13,600) --> See nearby quakes!
70 km (43 mi) ENE of Ugaiushak Island --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 8.3°C (47 F), humidity: 71%, wind: 5 m/s (10 kts) from NNW
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
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.
M 4.70.1 km96 Km W of Akhiok, Alaska, USAUSGS
M 5.68 kmSouth Of Alaska, USAEMSC

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
388.4 km NE of epicenter [Map] / not felt (reported through our app)
Volcanoes & Earthquakes - new app for Android

Earlier earthquakes in the same area since 1900

Mag. 4.7 earthquake - Gulf of Alaska, 60 mi west of Akhiok, Alaska, USA, on 19 Oct 8:07 pm (GMT -8)

Map of earlier quakes

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.