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Strong mag. 6.8 earthquake - 95km ESE of Atka, Alaska on Friday, 30 August 2013

Major mag. 7.0 earthquake - 94km ESE of Adak, Alaska on Friday, 30 August 2013

Major mag. 7.0 earthquake  - 94km ESE of Adak, Alaska on Friday, 30 August 2013
30 Aug 16:31 UTC: First to report: USGS after 6 minutes.
Date & time: Friday, 30 August 2013 16:25 UTC
Local time at epicenter: Friday, August 30, 2013 04:25:02
Magnitude: 7.0
Depth: 33.5 km
Epicenter latitude / longitude: 51.6096°N / 175.3611°W (Alaska, United States)
Nearest volcano: Seguam (42 km / 26 mi)
Primary data source: USGS
Estimated released energy: 2 x 1015 joules (554 gigawatt hours, equivalent to 4.8 x 105 tons of TNT or 29.8 atomic bombs!) [learn more]
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.
TimeMag. / DepthLocationSource
Fri, 30 Aug 16:25 UTCM 7.0 / 33.5 km94km ESE of Adak, AlaskaUSGS
Fri, 30 Aug 16:25 UTCM 7.0 / 33 kmAndreanof Islands, Aleutian IslandsGFZ
Fri, 30 Aug 16:25 UTCM 6.9 / 10 km ANDREANOF ISLANDS, ALEUTIAN IS.EMSC
Fri, 30 Aug 16:25 UTCM 7.0 / 34 kmESE of Adak, AlaskaGeoAu

shake map
(shakemap: USGS)

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (modified Mercalli) scale.
There are no user reports for this quake yet. If you felt it or were nearby when it occurred, be the first to report it!

Aftershocks of the 7.0 quake: 94km ESE of Adak, Alaska, 30 Aug 2013 16h25

Show info about this
List of recorded aftershocks, latest first (732 quakes):
  • 01 Sep 2015 14:32 UTC
    | M 1.9 |
    18 km (11.2 mi) depth
    |
    189 km (117 mi) distance
    | USGS | Details
  • 01 Sep 2015 08:25 UTC
    | M 3.3 |
    43 km (26.7 mi) depth
    |
    24 km (15 mi) distance
    | USGS | Details
  • 31 Aug 2015 19:48 UTC
    | M 2.0 |
    25.6 km (15.9 mi) depth
    |
    56 km (35 mi) distance
    | USGS | Details
  • 30 Aug 2015 21:23 UTC
    | M 1.7 |
    25.5 km (15.8 mi) depth
    |
    42 km (26 mi) distance
    | USGS | Details
  • 29 Aug 2015 08:24 UTC
    | M 3.7 |
    16.9 km (10.5 mi) depth
    |
    74 km (46 mi) distance
    | USGS | Details
  • 28 Aug 2015 16:30 UTC
    | M 2.2 |
    27.2 km (16.9 mi) depth
    |
    168 km (104 mi) distance
    | USGS | Details
  • 28 Aug 2015 13:47 UTC
    | M 1.7 |
    40.9 km (25.4 mi) depth
    |
    22 km (14 mi) distance
    | USGS | Details
  • 28 Aug 2015 10:02 UTC
    | M 2.2 |
    9.8 km (6.1 mi) depth
    |
    53 km (33 mi) distance
    | USGS | Details
  • 27 Aug 2015 16:31 UTC
    | M 3.4 |
    40.2 km (25 mi) depth
    |
    61 km (38 mi) distance
    | USGS | Details
  • 27 Aug 2015 03:05 UTC
    | M 2.8 |
    44.9 km (27.9 mi) depth
    |
    146 km (91 mi) distance
    | USGS | Details
  • 26 Aug 2015 08:43 UTC
    | M 2.3 |
    25.6 km (15.9 mi) depth
    |
    165 km (103 mi) distance
    | USGS | Details
  • 26 Aug 2015 08:22 UTC
    | M 3.3 |
    23.3 km (14.5 mi) depth
    |
    59 km (36 mi) distance
    | USGS | Details
  • 25 Aug 2015 20:41 UTC
    | M 2.7 |
    41.2 km (25.6 mi) depth
    |
    110 km (68 mi) distance
    | USGS | Details
  • 25 Aug 2015 00:54 UTC
    | M 4.9 |
    10 km (6.2 mi) depth
    |
    10 km (6 mi) distance
    | GFZ | Details
  • 22 Aug 2015 15:55 UTC
    | M 1.4 |
    34.3 km (21.3 mi) depth
    |
    113 km (70 mi) distance
    | USGS | Details
  • 21 Aug 2015 17:38 UTC
    | M 2.6 |
    46.3 km (28.8 mi) depth
    |
    113 km (70 mi) distance
    | USGS | Details
  • Show all

Map of aftershocks

Significant earthquakes in the same area since 1900

Major mag. 7.0 earthquake - 94km ESE of Adak, Alaska on Friday, 30 August 2013
 

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