Strong mag. 6.7 earthquake - Gulf of Alaska, 21 mi southeast of Ugaiushak Island, Lake and Peninsula County, Alaska, USA, on Thursday, May 28, 2015 21:00:09

Strong mag. 6.7 earthquake - Gulf of Alaska, 21 mi southeast of Ugaiushak Island, Lake and Peninsula County, Alaska, USA, on Thursday, May 28, 2015 21:00:09

Strong magnitude 6.7 earthquake at 56 km depth

29 May 07:05 UTC: First to report: USGS after 5 minutes.
May 29 09:10: Magnitude recalculated from 7.0 to 6.7.
Hypocenter depth recalculated from 51.0 to 55.6 km.
Date & time: 29 May 2015 07:00:09 UTC
Local time at epicenter: Thursday, May 28, 2015 21:00:09
Magnitude: 6.7
Depth: 55.6 km
Epicenter latitude / longitude: 56.5885°N / 156.4354°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Yantarni (62 km / 39 mi)
Nearby towns and cities:
118 km (73 mi) SSE of Ugashik (pop: 12) --> See nearby quakes!
125 km (78 mi) ENE of Chignik (pop: 87) --> See nearby quakes!
277 km (172 mi) WSW of Kodiak (pop: 6,250) --> See nearby quakes!
289 km (179 mi) ENE of Sand Point (pop: 1,060) --> See nearby quakes!
445 km (276 mi) SW of Homer (pop: 5,520) --> See nearby quakes!
520 km (323 mi) SW of Kalifornsky (pop: 7,850) --> See nearby quakes!
533 km (331 mi) SW of Kenai (pop: 7,660) --> See nearby quakes!
548 km (341 mi) SW of Sterling (pop: 5,620) --> See nearby quakes!
5886 km (3657 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
5886 km (3657 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
34 km (21 mi) SE of Ugaiushak Island --> See nearby quakes!
200 km (124 mi) WSW of Kodiak Island (pop: 13,600) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 7.1 x 1014 joules (197 gigawatt hours, equivalent to 1.7 x 105 tons of TNT or 10.6 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.
MagnitudeDepthLocationSource
M 6.756 km111km NNW of Chirikof Island, AlaskaUSGS
M 6.864 kmAlaska PeninsulaGFZ
M 6.860 km ALASKA PENINSULAEMSC
M 6.756 kmNNW of Chirikof Island AlaskaGeoAu

User reports for this quake (8)

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!
Dillingham / Severe shaking (MMI VIII)
kodiak near uscg base (636.9 km NNE of epicenter) [Map] / Light shaking (MMI IV) : It perplexed me at first because my houseplants were moving and the baseboard heaters were vibrating. I noticed the power line from the pole to the house was moving & no wind so immediately checked the website to see if something might be happening in the area. Thank you for the prompt information.
Anchorage / Strong shaking (MMI VI)
Kodiak / Light shaking (MMI IV) : at desk, felt rattling underneath floor. noticed plants swaying.
Homer / Very weak shaking (MMI II)
anchorage, ak (631.1 km NE of epicenter) [Map] / Light shaking (MMI IV)
anchorage, ak (631.1 km NE of epicenter) [Map] / Light shaking (MMI IV)
Aloha (United States, 2644 km SE of epicenter) : i heard the same growl i often hear during nearby quakes. shaking less than one minute in duration. presumably an aftershock? starting again right now, shaking again, very slight. it feels like i am sitting on a vibrating chair, a massage chair. (reported through EMSC)
Volcanoes & Earthquakes - new app for Android
to top
to top

Aftershocks of the 6.7 quake Gulf of Alaska, 21 mi southeast of Ugaiushak Island, Lake and Peninsula County, Alaska, USA, Thursday, May 28, 2015 21:00:09

More info
Recorded aftershocks, latest first (78 quakes):
  • 19 Nov 2015 20:20 UTC
    | M 3.1 |
    40.3 km (25 mi) depth
    |
    122 km (76 mi) distance
    | USGS | Details
  • 18 Nov 2015 14:46 UTC
    | M 2.9 |
    83.4 km (51.8 mi) depth
    |
    5 km (3 mi) distance
    | USGS | Details
  • 10 Nov 2015 03:43 UTC
    | M 2.8 |
    75 km (46.6 mi) depth
    |
    45 km (28 mi) distance
    | USGS | Details
  • 09 Nov 2015 10:34 UTC
    | M 3.3 |
    100 km (62.1 mi) depth
    |
    108 km (67 mi) distance
    | USGS | Details
  • 03 Nov 2015 06:56 UTC
    | M 2.7 |
    0.1 km (0.1 mi) depth
    |
    104 km (65 mi) distance
    | USGS | Details
  • 31 Oct 2015 10:45 UTC
    | M 3.4 |
    5.8 km (3.6 mi) depth
    |
    66 km (41 mi) distance
    | USGS | Details
  • 29 Oct 2015 20:12 UTC
    | M 2.8 |
    72.6 km (45.1 mi) depth
    |
    122 km (76 mi) distance
    | USGS | Details
  • 17 Oct 2015 07:33 UTC
    | M 2.4 |
    46.1 km (28.6 mi) depth
    |
    133 km (82 mi) distance
    | USGS | Details
  • 13 Oct 2015 15:04 UTC
    | M 2.9 |
    12.4 km (7.7 mi) depth
    |
    69 km (43 mi) distance
    | USGS | Details
  • 13 Oct 2015 04:14 UTC
    | M 2.8 |
    9.4 km (5.8 mi) depth
    |
    68 km (42 mi) distance
    | USGS | Details
  • 10 Oct 2015 14:34 UTC
    | M 3.9 |
    38.1 km (23.7 mi) depth
    |
    55 km (34 mi) distance
    | USGS | Details
  • 08 Oct 2015 04:35 UTC
    | M 3.4 |
    9.2 km (5.7 mi) depth
    |
    125 km (78 mi) distance
    | USGS | Details
  • 07 Oct 2015 12:46 UTC
    | M 2.5 |
    36.1 km (22.4 mi) depth
    |
    129 km (80 mi) distance
    | USGS | Details
  • 06 Oct 2015 18:36 UTC
    | M 2.4 |
    3.7 km (2.3 mi) depth
    |
    117 km (73 mi) distance
    | USGS | Details
  • 06 Oct 2015 00:08 UTC
    | M 3.9 |
    11.8 km (7.3 mi) depth
    |
    61 km (38 mi) distance
    | USGS | Details
  • 04 Oct 2015 12:09 UTC
    | M 3.1 |
    72.5 km (45 mi) depth
    |
    9 km (6 mi) distance
    | USGS | Details
    • Show all

to top

Earlier earthquakes in the same area

Strong mag. 6.7 earthquake - Gulf of Alaska, 21 mi southeast of Ugaiushak Island, Lake and Peninsula County, Alaska, USA, on Thursday, May 28, 2015 21:00:09
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.