Strong mag. 5.9 earthquake - North Pacific Ocean, 133 mi east of Unalaska, Aleutians West (CA) County, Alaska, USA, on Thursday, 27 October 2016 at 11:53 (GMT)

Strong mag. 5.9 earthquake - North Pacific Ocean, 133 mi east of Unalaska, Aleutians West (CA) County, Alaska, USA, on Thursday, 27 October 2016 at 11:53 (GMT)

Strong magnitude 5.9 earthquake at 10 km depth

27 Oct 12:02 UTC: First to report: GFZ after 10 minutes.
Oct 27 12:05: Magnitude recalculated from 5.5 to 5.6.
Oct 27 12:07: Magnitude recalculated from 5.6 to 5.8.
Oct 27 12:32: Magnitude recalculated from 5.8 to 5.9.
Date & time: 27 Oct 2016 11:53:17 UTC
Magnitude: 5.9
Depth: 10.0 km
Epicenter latitude / longitude: 53.63°N / 163.3°W (North Pacific Ocean, United States)
Nearest volcano: Isanotski (116 km / 72 mi)
Nearby towns and cities:
136 km (85 mi) S of False Pass (pop: 40) --> See nearby quakes!
171 km (107 mi) SSW of King Cove (pop: 1,010) --> See nearby quakes!
172 km (107 mi) ESE of Akutan (pop: 1,040) --> See nearby quakes!
177 km (110 mi) SSW of Cold Bay (pop: 123) --> See nearby quakes!
214 km (133 mi) E of Unalaska (pop: 4,490) --> See nearby quakes!
262 km (163 mi) SW of Sand Point (pop: 1,060) --> See nearby quakes!
296 km (184 mi) SSW of Nelson Lagoon (pop: 52) --> See nearby quakes!
368 km (229 mi) SW of Perryville (pop: 113) --> See nearby quakes!
411 km (256 mi) SW of Chignik Lake (pop: 73) --> See nearby quakes!
426 km (265 mi) SW of Chignik Lagoon (pop: 78) --> See nearby quakes!
Primary data source: GFZ (German Research Centre for Geosciences)
Estimated released energy: 4.5 x 1013 joules (12.4 gigawatt hours, equivalent to 10676 tons of TNT or 0.7 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 5.910 kmUnimak Island Region, AlaskaGFZ
M 5.817 km- 136km S of False Pass, AlaskaUSGS
M 6.010 kmUNIMAK ISLAND REGION, ALASKAEMSC

shake map
(shakemap: 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

Aftershocks

More info
Recorded aftershocks, latest first (15 quakes):
  • 28 Nov 2016 17:46 UTC
    | M 4.7 |
    20 km (12.4 mi) depth
    |
    25 km (16 mi) distance
    | EMSC | Details
  • 23 Nov 2016 15:33 UTC
    | M 2.4 |
    38.3 km (23.8 mi) depth
    |
    39 km (24 mi) distance
    | USGS | Details
  • 14 Nov 2016 22:01 UTC
    | M 3.2 |
    2 km (1.2 mi) depth
    |
    26 km (16 mi) distance
    | USGS | Details
  • 14 Nov 2016 19:56 UTC
    | M 3.4 |
    25 km (15.5 mi) depth
    |
    21 km (13 mi) distance
    | USGS | Details
  • 14 Nov 2016 19:40 UTC
    | M 4.9 |
    10 km (6.2 mi) depth
    |
    24 km (15 mi) distance
    | EMSC | Details
  • 08 Nov 2016 07:44 UTC
    | M 2.7 |
    24.3 km (15.1 mi) depth
    |
    27 km (17 mi) distance
    | USGS | Details
  • 06 Nov 2016 15:29 UTC
    | M 2.9 |
    63.8 km (39.6 mi) depth
    |
    3 km (2 mi) distance
    | USGS | Details
  • 28 Oct 2016 08:36 UTC
    | M 5.5 |
    10 km (6.2 mi) depth
    |
    15 km (9 mi) distance
    | GFZ | Details
  • 27 Oct 2016 22:46 UTC
    | M 4.4 |
    10 km (6.2 mi) depth
    |
    7 km (4 mi) distance
    | EMSC | Details
  • 27 Oct 2016 16:24 UTC
    | M 4.3 |
    8.8 km (5.5 mi) depth
    |
    10 km (6 mi) distance
    | USGS | Details
  • 27 Oct 2016 16:08 UTC
    | M 2.6 |
    52.5 km (32.6 mi) depth
    |
    11 km (7 mi) distance
    | USGS | Details
  • 27 Oct 2016 15:55 UTC
    | M 3.8 |
    9 km (5.6 mi) depth
    |
    23 km (14 mi) distance
    | EMSC | Details
  • 27 Oct 2016 14:06 UTC
    | M 3.0 |
    40 km (24.9 mi) depth
    |
    2 km (1 mi) distance
    | EMSC | Details
  • 27 Oct 2016 12:44 UTC
    | M 5.5 |
    10 km (6.2 mi) depth
    |
    9 km (6 mi) distance
    | GFZ | Details
  • 27 Oct 2016 12:00 UTC
    | M 3.6 |
    5.5 km (3.4 mi) depth
    |
    26 km (16 mi) distance
    | USGS | Details

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!
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.