Very strong mag. 6.6 earthquake - Gulf of Alaska, 2.8 mi southwest of Chernabura Island, Aleutians East County, Alaska, USA, on Wednesday, 9 October 1985 at 09:33 (GMT)

Very strong mag. 6.6 earthquake - Gulf of Alaska, 2.8 mi southwest of Chernabura Island, Aleutians East County, Alaska, USA, on Wednesday, 9 October 1985 at 09:33 (GMT)

Tremblement de terre très fort magnitude 6.6 at 30 km depth

Date & time: 9 Oct 1985 09:33:32 UTC
Magnitude: 6.6
Profondeur: 30.2 km
Epicenter latitude / longitude: 54.765°N / 159.613°W (Gulf of Alaska, Alaska, États-Unis)
Volcan le plus près: Stepovak Bay 1 (126 km / 78 mi)
Nearby towns and cities:
85 km SE de Sand Point (pop: 1,060) --> Voir les séismes à proximité!
131 km SSO de Perryville (pop: 113) --> Voir les séismes à proximité!
170 km SE de Nelson Lagoon (pop: 52) --> Voir les séismes à proximité!
174 km SSO de Chignik Lake (pop: 73) --> Voir les séismes à proximité!
176 km E de King Cove (pop: 1,010) --> Voir les séismes à proximité!
185 km SSO de Chignik Lagoon (pop: 78) --> Voir les séismes à proximité!
204 km E de Cold Bay (pop: 123) --> Voir les séismes à proximité!
405 km ENE de Akutan (pop: 1,040) --> Voir les séismes à proximité!
460 km ENE de Unalaska (pop: 4,490) --> Voir les séismes à proximité!
546 km SO de Kodiak Station (pop: 1,300) --> Voir les séismes à proximité!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 5 x 1014 joules (139 gigawatt hours, equivalent to 1.2 x 105 tons of TNT or 7.5 atomic bombs!) 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.
MagnitudeProfondeurLocationSource
M 6.630 kmsouth of Alaska (USA)USGS
Note: for quakes of 2012 and earlier, our database often contains only records from 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!
Volcanoes & Earthquakes - new app for Android
to top

Aftershocks

More info
Recorded aftershocks, latest first (4 quakes):
to top

Earlier earthquakes in the same area

Volcanoes & Earthquakes - new app for Android
Why is there advertising on this site?
Support us - Help us upgrade our services!
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.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card 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!
Copyright: VolcanoDiscovery ou autres sources indiquées.
Utilisation des documents: Les textes, les images et les vidéos de ce site internet sont protégées par copyright. Toute reproduction et tout usage sans accord préalable ne sont pas autorisés. Si vous désirez acquérir pour certains documents (photos, vidéos, textes ou autres) le droit de reproduction, d'édition et, plus généralement, de toute utilisation destinée à un usage public, qu'elle soit commerciale ou pas, vous êtes priés de nous contacter.