Moderate mag. 4.9 earthquake - Gulf of Alaska, 1 mi east of Sand Point, Alaska, USA, on 24 Sep 9:57 pm (GMT -8) -

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 9 semaines earlier.
Moderate mag. 4.9 earthquake - Gulf of Alaska, 1 mi east of Sand Point, Alaska, USA, on 24 Sep 9:57 pm (GMT -8)

Séisme modéré magnitude 4.9 at 10 km depth

25 Sep 06:04 UTC: Premier à signaler: USGS après 6 minutes.
25 Sep 06:11: Magnitude recalculée de 5.4 à 4.9. Profondeur recalculée de 21.0 à 26.3 km (de 13 à 16.3 mi). Emplacement de l'épicentre corrigé de 15.5 km (9.6 mi) au SSW.
25 Sep 06:15: Profondeur recalculée de 26.3 à 10.0 km (de 16.3 à 6.2 mi). Emplacement de l'épicentre corrigé de 14.6 km (9.1 mi) au SSW.
Date & time: 25 Sep 2020 05:57:57 UTC -
Local time at epicenter: 24 Sep 9:57 pm (GMT -8)
Magnitude: 4.9
Profondeur: 10.0 km
Epicenter latitude / longitude: 55.0499°N / 158.0177°W (Gulf of Alaska, Alaska, États-Unis)
Volcan le plus près: Veniaminof (146 km / 91 mi)
Nearby towns and cities:
119 km SE de Perryville (pop: 113) --> Voir les séismes à proximité!
142 km SSE de Chignik Lake (pop: 73) --> Voir les séismes à proximité!
144 km SSE de Chignik Lagoon (pop: 78) --> Voir les séismes à proximité!
161 km E de Sand Point (pop: 1,060) --> Voir les séismes à proximité!
214 km S de Port Heiden (pop: 98) --> Voir les séismes à proximité!
227 km ESE de Nelson Lagoon (pop: 52) --> Voir les séismes à proximité!
274 km E de King Cove (pop: 1,010) --> Voir les séismes à proximité!
300 km E de Cold Bay (pop: 123) --> Voir les séismes à proximité!
450 km SO de Kodiak Station (pop: 1,300) --> Voir les séismes à proximité!
460 km SO de Kodiak (pop: 6,250) --> Voir les séismes à proximité!
Weather at epicenter at time of quake:
Broken Clouds 9.7°C (49 F), humidity: 73%, wind: 3 m/s (5 kts) from NW
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.4 x 1012 joules (392 megawatt hours, equivalent to 338 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.
MagnitudeProfondeurLocationSource
M 4.910 kmAlaska Peninsula, USAUSGS
M 4.924 kmAlaska Peninsula, USAGFZ
M 4.930 kmAlaska Peninsula, USAEMSC
M 5.015 kmAlaska Peninsula, USAGeoAu
M 5.610 kmAlaska Peninsula, USABMKG

User reports for this quake (2)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Contribute:
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Perryville (114.1 km NW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / very short (reported through our app)
Portland Oregon / Weak shaking (MMI III) / rattling, vibrating / 20-30 s : This is the only quake in the northern hemisphere at the time. We thought it was closer, but don't see any others. I was already awake, but my wife was awakened by the shaking.
Volcanoes & Earthquakes - new app for Android

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.