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Interactive map of latest earthquakes and active volcanoes in the world

Moderate mag. 5.7 earthquake - Unimak Island region, Alaska (USA) on Thursday, 13 August 2020

Moderate mag. 5.7 earthquake  - Unimak Island region, Alaska (USA) on Thursday, 13 August 2020
Aug 13 06:56: Magnitude recalculated from 5.4 to 5.6.
Hypocenter depth recalculated from 64.0 to 12.7 km.
Aug 13 16:38: Magnitude recalculated from 5.6 to 5.7.
Hypocenter depth recalculated from 12.7 to 10.4 km.
Date & time: Thursday, 13 August 2020 06:39 UTC
Magnitude: 5.7
Depth: 10.4 km
Epicenter latitude / longitude: 53.42°N / 163.6973°W (United States)
Nearest volcano: Westdahl (148 km / 92 mi)
Primary data source: USGS
Estimated released energy: 2.2 x 1013 joules (6.22 gigawatt hours, equivalent to 5351 tons of TNT or 0.3 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
Thu, 13 Aug 06:39 UTCM 5.7 / 10.4 kmUnimak Island region, Alaska (USA)USGS
Thu, 13 Aug 06:40 UTCM 5.6 / 26 kmUnimak Island Region, Alaska (USA)GFZ
Thu, 13 Aug 06:39 UTCM 5.7 / 10 kmUnimak Island Region, Alaska (USA)EMSC
Thu, 13 Aug 06:39 UTCM 5.7 / 10 kmUnimak Island Region, Alaska (USA)BMKG
Thu, 13 Aug 06:40 UTCM 5.4 / 27.8 kmUnimak Island Region, Alaska (USA)GeoAu

User experience reports for this quake

Westchester, NY / not felt

Aftershocks of the 5.7 quake: Unimak Island region, Alaska (USA), 13 Aug 2020 06h39

Show info about this
List of recorded aftershocks, latest first (8 quakes):
  • 23 Aug 2020 22:40 UTC
    | M 4.5 |
    35 km (21.7 mi) depth
    |
    16 km (10 mi) distance
    | USGS | Details
  • 15 Aug 2020 14:35 UTC
    | M 2.2 |
    63.3 km (39.3 mi) depth
    |
    17 km (11 mi) distance
    | USGS | Details
  • 15 Aug 2020 08:38 UTC
    | M 4.0 |
    10 km (6.2 mi) depth
    |
    16 km (10 mi) distance
    | USGS | Details
  • 15 Aug 2020 04:12 UTC
    | M 3.7 |
    35 km (21.7 mi) depth
    |
    26 km (16 mi) distance
    | USGS | Details
  • 13 Aug 2020 07:52 UTC
    | M 3.6 |
    10 km (6.2 mi) depth
    |
    34 km (21 mi) distance
    | USGS | Details
  • 13 Aug 2020 07:27 UTC
    | M 3.0 |
    26.4 km (16.4 mi) depth
    |
    4 km (2 mi) distance
    | USGS | Details
  • 13 Aug 2020 07:01 UTC
    | M 3.2 |
    25.3 km (15.7 mi) depth
    |
    5 km (3 mi) distance
    | USGS | Details
  • 13 Aug 2020 06:59 UTC
    | M 2.8 |
    9.8 km (6.1 mi) depth
    |
    8 km (5 mi) distance
    | USGS | Details

Map of aftershocks

Significant earthquakes in the same area since 1900

Moderate mag. 5.7 earthquake - Unimak Island region, Alaska (USA) on Thursday, 13 August 2020

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